why is important to use an organism with a recessive phenotype in a cross with an organism of unknown Genotype

Answers

Answer 1

Answer:

One of the central conclusions Mendel reached after studying and breeding multiple generations of pea plants was the idea that "[you cannot] draw from the external resemblances [any] conclusions as to [the plants'] internal nature." Today, scientists use the word "phenotype" to refer to what Mendel termed an organism's "external resemblance," and the word "genotype" to refer to what Mendel termed an organism's "internal nature." Thus, to restate Mendel's conclusion in modern terms, an organism's genotype cannot be inferred by simply observing its phenotype. Indeed, Mendel's experiments revealed that phenotypes could be hidden in one generation, only to reemerge in subsequent generations. Mendel thus wondered how organisms preserved the "elementen" (or hereditary material) associated with these traits in the intervening generation, when the traits were hidden from view.

Answer 2

It is important to use an organism with a recessive phenotype in a cross with an organism of an unknown genotype to identify the recessive traits.

What are phenotype and genotype?

The observable traits of an individual are the result of gene expression; the clinical manifestation of a person with a certain genotype is called the phenotype of an individual. Some examples of the phenotype are height, skin color, eye color, hair nature, etc.

The term "genotype" refers to an organism's whole gene pool, or, in other words, the genetic makeup of that creature. The phrase can also be used to describe the alleles, or different forms of a gene, that an organism carries in a more specific meaning.

A recessive phenotype is used in a cross with an organism of unknown Genotype to identify the recessive traits.

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Related Questions

all of the following conditions helps preserve organisms as fossils EXCEPT A)quick burial by sediments B) hard parts. C) protection from scavengers. D) activities of microorganisms

Answers

Answer:

D) activities of microorganisms

Explanation:

CORRECT

HELPPPP!!!! ASAPPPP!!!!!

What are all of the functions of water in the body? (Nutrition Lesson)

Answers

Answer:

Protects body organs and tissues. Carries nutrients and oxygen to cells. Lubricates joints. Lessens burden the on kidneys and liver by flushing out waste products.

Explanation:

Water is a
compound. How do these images of water illustrate
this? Provide evidence to support the claim. Explain
your reasoning

Answers

Answer:

Is made up of different kinds of atoms chemically combined.

Explanation:

Is the ocean a carbon sink or a carbon source

Answers

Answer:

Explanation:

The Carbon CycleChanges to The Carbon CycleThe Ocean and CarbonBiological Pump

The ocean plays an important part in the carbon cycle. Overall, the ocean is called a carbon ‘sink’ because it takes up more carbon from the atmosphere than it gives up.Carbon dioxide from the atmosphere dissolves in the surface waters of the ocean. Some of the carbon dioxide stays as dissolved gas, but much of it gets turned into other things. Photosynthesis by tiny marine plants (phytoplankton) in the sunlit surface waters turns the carbon into organic matter

the ocean is a carbon sink

How could flying squirrel adapt further to allow it to be more successful?

Answers

Answer:

The structural adaptations of the flying squirrel has developed a good sense of balance, sail-like fur skin membrane that extends from the wrists to ankles, delicate wrist bones that control this membrane, allowing the squirrel to steer, and a fluffy tail that balances out and stabilizes the flight.

Has anyone done this Sexual vs Asexual Reproduction before?

Answers

Answer:

Explanation:yes

Answer: for the genetic variation, the offspring gets a allele from each parent.

Explanation:

Yes

Which countries allow designer babies?

Answers

Answer:

Thus, Sweden became one of four countries that allow the production of designer babies. The others are Belgium, the United Kingdom, and the United States. In Spain, the first designer baby was born in Tenerife in 2005, although she was produced in the Chicago Reproductive Genetics Unit in 2004.

Explanation:

PLEASE HELP!!!
List three factors that affect soil formation and explain “how” in 2 sentences each!

Answers

Parent material. Few soils weather directly from the underlying rocks. ...Climate. Soils vary, depending on the climate. ...Topography. Slope and aspect affect the moisture and temperature of soil. ...Biological factors. Plants, animals, micro-organisms, and humans affect soil formation. __________________FOLLOW ME

provides protection and a space to move and breathe *

Umbilical cord
Amniotic sac
Amniotic fluid
placenta

Answers

amniotic sac is the answer <3
I think it’s B but I’m not fully sure

21.As mentioned in the video, the environment can also affect an organism's traits. The example of nourishment was used in the case for Spike, as this could affect his growth and size. This can also occur in humans. UV light was not mentioned in the video. How could UV light potentially affect an organism's trait? Provide one example.

Answers

Answer:

UV light can modify the DNA of a human being, provoking mutations that affect the traits. For example, exposure to the sun's UV rays affects the DNA of the skin cells, causing mutations that can lead to cancer.

Explanation:

An environmental factor that can affect humans traits is the exposure to UV light that the sun radiates. The DNA in our skin cells absorbs the UV rays. As a result, the DNA can suffer modifications that result in skin cancer. Also, the absorption of UV rays causes wrinkles since cell components are affected due to the accumulation of UV light.

Answer: UV light can modify the DNA of a human being, provoking mutations that affect the traits. For example, exposure to the sun's UV rays affects the DNA of the skin cells, causing mutations that can lead to cancer.

Explanation: An environmental factor that can affect humans traits is the exposure to UV light that the sun radiates. The DNA in our skin cells absorbs the UV rays. As a result, the DNA can suffer modifications that result in skin cancer. Also, the absorption of UV rays causes wrinkles since cell components are affected due to the accumulation of UV light.

9. A
is an example of an organism that performs
photosynthesis.

Help plz

Answers

Any plant. You could say a tree. Photosynthesis is process of using light for energy
Photosynthesis is the process that plants do to create there food, so the only organisms that can perform photosynthesis is plants

HELPPPPPP.......30 points DONT ANSWER IF YOU'RE NOT GOING TO HELP I WILL REPORT YOU
The image shows a lake, a factory, a cloud in the sky, a cow, dead organisms, a tree, and the sun. An arrow from the sun to the tree is labeled A. An arrow from the sky to the tree is labeled B. The sky is labeled C above the cloud. The letter D is in the air and an arrow points from it down to dead organisms. An arrow points from dead organisms to the ground labeled E. An arrow points from the cow into to the sky labeled F. An arrow points from the factory to the sky labeled G. An arrow from the sky to the lake is labeled H above the lake.


Using the diagram above, match the description to the corresponding location in the carbon cycle model. Provide the letter only.

Carbon dioxide is converted to sugar used for food.
Carbon trapped in fossil fuels is converted to carbon dioxide.
Organic carbon is converted to fossil fuels.
Carbon dioxide is converted to carbonates.
Sugar is broken down and converted to carbon dioxide.
Location ________
Location ________
Location ________
Location ________
Location ________

Answers

Answer:

A - 1. Carbon dioxide is converted to sugar used for food (this is process of phosynthesis).

G - 2. Carbon trapped in fossil fuels is converted to carbon dioxide (this is combustion of fuel).

E - 3. Organic carbon is converted to fossil fuels.

H - 4. Carbon dioxide is converted to carbonates.

F - 5. Sugar is broken down and converted to carbon dioxide (this is breathing).

Explanation:

hope this helps

Put the steps of Protein Synthesis below into the correct order.
4 points
Step 1
Step 2
Step 3
Step 4
A Protein
molecule is
produced
An mRNA
molecule is
produced
mRNA interacts
with a Ribosome
DNA interacts
with RNA
polymerase

Answers

Step 1: dna interacts with rna polymerase
Step 2: mRNA molecule is produced
Step 3: mRNA interacts with a ribosome
Step 4 protein molecule is produced

The correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).

What is transcription?

Transcription (gene transcription) is the process by which a fragment of DNA is employed to generate an mRNA.

This messenger RNA (mRNA) then travels to the ribosomes in the cytoplasm to generate a protein.

The process of translation refers to the protein synthesis by an mRNA template.

In conclusion, the correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).

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If you rescue a snake and give them a home in your house will that cause them to not shed? And why!! Very important. Will mark brainless!!!

Answers

No snakes shed there skin when they grow it will eventually shed

Francis grew some plants for a science experiment. The sketch of his experiment after several days is shown. Which tropism is Francis most likely investigating?

Answers

The correct answer to this open question is the following.

Unfortunately, you did not provide the sketch or the photo that shows what Francis is doing. So we do not know what you are talking about.  

However, trying to help you, we did some deep research and can comment on the following.

If the photo shows a plan under the light of a lamp, moving towards the lamp direction, then tropism is Francis most likely investigating is phototropism.

To better understand the concept, Tropism is the movement of a plant towards the direction of an influence exerted on it. This means that an external factor is introduced in order to make the plant grow through an external influence.

So when we use the term phototropism, this means that the plant responds to the direction of the source of light and grows in that direction. That is what Francis is using in his science experiment.

Answer:

phototropism

Explanation:

if you want an in depth answer, look at the other one, not mine lol! (I attatched the image)

Under identical conditions, which surface will reflect the greatest amount of insolation?

Answers

Answer:

Earth's surface

Explanation:

Will be receiving the greatest amount of isolation

Which of the following is not a function of the skeletal system?
A.
provides a framework for the body
B.
provides protection for internal organs
C.
movement of bones
D.
production of new blood cells

Answers

Answer:

C

Explanation:

The skeleton relies upon the contraction and relaxation of muscles which are attached to bone in order to move. The muscular system is made up of three types of muscle, one of which is responsible for the movement of bone. To add to the confusion, the relationship between both muscles and bones is often lumped together as the musculoskeletal system, but to be sure, they are unique in their own ways.

In summary, bones can't move on their own, and therefore movement cannot be the skeletal system's function.

What 3 systems get put to work when feeding and how does each one work when you eat?

Answers

Answer:Digestive and muscular systems would be working together to chew food and work it down to the stomach to be digested. The digestive system and circulatory circulatory system would be working together to break food down and move nutrients to cells. The nervous system decides what to eat and when to chew.

Explanation:

HELP ASAP!!

Which scenario is an example of an environmental problem becoming an
economic problem?
O A. Excessive pollution decreases a community's access to affordable
clean water.
O B. Destruction of habitat reduces a population of animals in a remote
ecosystem.
O C. Deforestation creates farmland that allows a community to
produce more crops.
O D. Excessive manufacturing of a product reduces demand in a
saturated market.

Answers

Answer: A, excessive pollution decreases a communities access to affordable clean water.

Explanation: ap3x

Answer:

O A. Excessive pollution decreases a community's access to affordable

clean water.

Explanation:

Above answer is absolutely correct! I just want to assure you :)

frank has type A blood (AA or AO) and margarita has type B (BB or BO) blood. They have a new baby. Vinnie, with type O blood. Is this possible or should frank accuse margarita of cheating?

Answers

Answer:

It is technically possible, if and only if, both parents have AO and BO blood.

Explanation:

the only way (most of the time) a child can get O blood is if both genes accepted by the parents are O.  That would mean both parents would have to have O recessive genes.

10. In a bacterial cell, which structure allows the cell to move through fluid?
A flagella
B pili
C nucleoid
D ribosomes

Answers

Answer:

a, flagella. they allow cells to swim

A. Flagella vuvvuvugivivufxyyfyx

DNA strand: 5' GGC TAG ATC GGA TCA 3
mRNA strand:
Protein (amino acid chain):
Pls help

Answers

mRNA: ccg auc uag ccu agu
Amino acid: pro-ile -stop-pro-ser

How does the process of DNA replication impact mutations in an individual?
a All DNA replication stops when there is a mutation so the mutation wont hurt the individual
b Replication only produces new DNA strands so the old stand with the mutation is destroyed

c Since replication keeps the old strands as templates mutations maybe earned into future stands
d Mutations are often lost since the cell will die doring the replication process if the DNA is mutatie.​

Answers

Answer: A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.

Explanation:

Some cells contain two copies of each chromosome, and some cells contain only one copy of each chromosome. Which types of cells contain two copies of each chromosome?

Select all that apply.
A. egg cell
B. skin cell
C. body cell
D. blood cell
E. sperm cell

Answers

Body cell and sperm cell

The type of cell that  contain two copies of each chromosome should be considered as the sperm cell and the body cell.

What is a chromosome?

It is considered as the thread-like structures that should be located inside the animal or plant cells nucleus. Each and every chromosomes should be made of protein and the individual molecule of DNA.

Therefore, The type of cell that  contain two copies of each chromosome should be considered as the sperm cell and the body cell.

Learn more about chromosome here: https://brainly.com/question/17599295

natural selection is an example of a mechanism of evolution. does this mechanism produce a change in individuals or populations? explain

Answers

Natural selection refers to the procedure where the species better amended to their surrounding appear to survive and generate more offspring. Natural selection refers to one of the mechanisms that make modifications in the frequencies of genes in populations and thus, it is the mechanism of evolutionary change.

However, the phenomenon of genetic drift and natural selection cannot take place unless and until there is a genetic variation, that is unless some individuals are genetically distinct from others.

A reaction that absorbs energy from the environment a reaction that requires an activation energy a reaction that releases energy into the environment a reaction that does not involve a change in energy

Answers

Answer:

Endothermic reaction

Explanation:

An endothermic reaction is a chemical reaction that takes energy from the atmosphere. It requires activation energy.  An exothermic reaction is the reverse of an endothermic reaction. Reversible reactions are where the compounds will react to the initial reagents.

1. Choose the items that are Inferential Statistics. (Check all that apply)
Give the likelihood of data occurring by chance
Include the mean
Summarize the data
Tell you whether to call your mother about your results
Give a measure of statistical significance

Answers

Answer:

A, D, and E is correct

Explanation: I took the test and got this one correct.

The items that are inferential statistics among the options would be:

Give the likelihood of data occurring by chanceTell you whether to call your mother about your resultsGive a measure of statistical significance

This is largely due to the fact that inferential statistics refer to the branch of statistics that draws conclusions from a set of data. It is as opposed to descriptive statistics which focus on summarizing, describing, arranging, and or categorizing data in such a way that trends are shown at a glance.

Statistical parameters such as mean, mode, and median only measures attributes of data relating to the measure of central tendencies. Data summary is purely descriptive

Hence, the items selected are those that are conclusive and not descriptive.

More about types of statistics can be found here: https://brainly.com/question/1135243

Organize the steps of primary succession to describe how the empty rock
landscape transformed into mature forest communities.
First
1
Rock is broken down and converted into soil
N
Lichen and other pioneer species grown on the rocks
3
Small pine trees grow in the soil
4
Grasses and flowering plants grow in the soil
5
The glacier retreated, leaving barren only rock
6
Shrubs and small trees grow in the soil
7
::::
A climax community develops
Last

Answers

Answer:

A climax community develops

The glacier retreated, leaving barren only rock

Lichen and other pioneer species grown on the rocks

Rock is broken down and converted into soil

Grasses and flowering plants grow in the soil

Shrubs and small trees grow in the soil

Small pine trees grow in the soil

Explanation:

hope its correct can i get brainliest i spend a lot of time on it

A stick insect has body parts that look like sticks and are a similar color to the trees
they live in. How does this help the stick insect to survive?

Answers

Because they can camouflage and hide from other animals trying to eat it

How does reproductive isolation affect the gene pools of two or more populations?

Answers

How does reproductive isolation affect the gene pools of two or more populations? ... These changes may prevent individuals from each population from being able to mate successfully with each other. If this happens, the two populations are considered to be distinct species. I hope this answer helps you out. Have a great rest of your day. ☺️
These changes can prevent individuals from being able to successfully mate with one another from each population. If this occurs, it is considered that the two populations are distinct species.
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