What is XX and XY? And which are their differences?

Answers

Answer 1

Answer:

chromosomes

Explanation:

the diefference is that one is combination of female genes and the other a combination of female with male genes


Related Questions

When would a point mutation occur?

It can occur before and after cell division
Before the cell divides
After the cell divides
Before DNA replication

Answers

Answer:

The correct answer is option 1. Before and After Cell Division

Explanation:

Point mutations are frequently the result of mistakes made during DNA replication, although modification of DNA, such as through exposure to X-rays or to ultraviolet radiation, also can induce point mutations. But they may also occur after as well as before the division of a cell.

The periosteum and the endosteum are both membranes.
a.
True
b. False

Answers

True bc I looked it up

HELP ME PLEASEEE
1. What percentage of the offspring will be heterozygous?
2. Why does each parent contribute only one allele to the offspring?

Answers

Answer:

1. 50% from the picture as they are Aa which means they are heterozygous and AA mean dominant and aa means ressecive.

2. Because alleles are segregated during meiosis when homologous chromosomes are separated.

Explanation:

Hope this make helps you to understand :)

1. 50%
2. Because alleles are segregated during meiosis when homologous chromosomes are separated.

What is the NADPH responsible for?

Answers

Answer:

NADPH is a cofactor, used to donate electrons and a hydrogens to reactions catalyzed by some enzymes.

Changes in water pressure within guard cells cause the cells to open or close the stomata. This response helps the plant maintain homeostasis by

Answers

Answer:

reduced water loss

Explanation:

When the water enters the cells, they swell and become bowed. This causes the guard cells to bend away from each other, thereby opening the stomata. Conversely, when guard cells lose potassium ions, water diffuses out of the cells by osmosis.

The response helps the plant maintain homeostasis by regulating water levels that plants lose during transpiration.

What is cellular homeostasis?

The expression cellular homeostasis makes reference to the processes by which an organism maintains an internal state of equilibrium.

Cellular homeostasis is fundamental for the survival of the cell and the organism.

Cellular homeostasis in this case indicates the mechanism to maintain concentration and gradients used by the plant to carry out metabolic functions.

In conclusion, the response helps the plant maintain homeostasis by regulating water levels that plants lose during transpiration.

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5. One reason that viruses are harmful to living cells and classified as pathogens is that they-
A cause organisms to produce daughter cells through the process of mitosis
B stimulate the production of ATP in mitochondria within host cells
C damage the cells used in the production of new virus particles
Dreduce the amount of cholesterol in the blood of people with heart disease

Answers

The answer is b. Just took the test

One of the end products of cellular respiration is ATP, which is the molecule that cells use for energy. How is ATP produced during cellular respiration.

Answers

Answer:

The breaking down of glucose into energy (Which is ATP).

Explanation:

Answer:

36 ATP molecules are created from cellular respiration in eukaryotic cells

Explanation:

Label the parts abcd

Answers

Answer:

A- sensory receptor

B-sensory neuron

C- Relay neuron

D-Motor neuron

E-effector muscle in arm

Explanation:

Plz help quickly I’ll mark

Answers

Answer:

Carbon Monoxide

Explanation:

I just took the test :)

Which object has the most gravitational pull?

Answers

Answer:

Jupiter, the fifth planet from the Sun, has the strongest gravitational pull because it's the biggest and most massive.

Explanation:

Answer:

Jupiter

Explanation:

What 3 factors influence the rate of photosynthesis?

Answers

Light exposure, carbon dioxide levels and water levels

These are
inorganic materials needed in small amounts
O Proteins
0 Vitamins
Water
0 0
Fats

Answers

well water would be the only possible answer

Which of the following adaptations helps alpine animals survive the cold winter? a. Reduced lung size b. Low levels of hemoglobin c. Hibernation d. Large legs, ears, and tails.

Answers

Hibernation is an adaptation that helps alpine animals to survive the cold winter. Hibernation helps to store energy.

Hibernation is an adaptation that helps to store energy by decreasing the metabolic rate.

This adaptation (hibernation) is observed in animals living in extremely cold conditions (e.g., alpine animals).

The hibernation adaptative strategy is characterized by an excessively low temperature in the body, slow breath rate, slow beats (heart rate), and low metabolic rate.

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Answer:

C

Explanation:

Edge 2021 trust

Non examples of cell cycle

Answers

Viruses, virions, and viroids are all examples of non-cellular life.

The plasma membrane of the cell consists of

Answers

Glycerol phospholipids

Answer:

phospholipid bilayer

Explanation:

this includes:

- head (hydrophilic)

- tail (hydrophobic)

<3 hope this helps!

The ____________ is a muscular dome that forms the inferior boundary of the thorax, separating the thorax from the abdomen.

Answers

Answer: the answer is diaphragm

Help with biology plzz USA test prep

Answers

Answer:

see below

Explanation:

amplification: MUTATION = a type of mutation

independent assortment: MENDELIAN = how different

genes independently separate from one another

when reproductive cells develop

nondisjunction: MUTATION = a type of chromosomal

mutation

translocation: MUTATION = another type of chromosomal

mutation

codominance: MENDELIAN = a relationship between two

genes where neither allele is recessive and both

are expressed

insertion: MUTATION = a type of mutation

radiation: MUTATION = causes mutations

virus: MUTATION = causes mutations as the virus

replicates

deletion: MUTATION = a type of mutation

law of dominance: MENDELIAN = one of Mendel's laws

of inheritance

sex linked traits: MENDELIAN = linkage is an exception

to Mendel's law of independent assortment

incomplete dominance: MENDELIAN = when none of the

factors of a gene is dominant and there is a blend,

such as a red flower crossed with a white flower

turns out pink

law of segregation: MENDELIAN = one of Mendel's laws

of inheritance

substitution: MUTATION = a type of mutation

Which of these greetings is written and punctuated correctly for a personal letter?

Answers

What the answers cuh

What kind of selection occurs in many birds when males that build strong nests and help care for young are chosen by females and mates

Answers

ANSWER: This process is known as sexual selection.

what is the powerhouse of the cell?

Answers

Answer:

Mitochondria are responsible for respiration

Answer:

I believe it's mitochondria

How do you think astronomers group planets?

Answers

Answer:

They group them biased off of similar traits and there orbital paths.

Explanation:

I hope this helped ^ ^

Summarize the lytic cycle. (1 point)

The viral DNA incorporates itself with the host cells and replicates whenever the host cell replicates itself.

A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.

A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.


A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.

Answers

Answer: A virus injects its genetic material into the host cell, copies itself using the host's structures and resources, and then forms new viruses that burst out of the host cell

The lytic cycle is one of the two main life cycles of viruses, the other being the lysogenic cycle. In the lytic cycle, a virus infects a host cell and hijacks its cellular machinery to replicate and produce new virus particles, or virions.

The correct option is D .

The lytic cycle is rapid and results in the destruction of the host cell. It is often associated with acute infections, where the symptoms of the infection are more severe and appear relatively quickly. Examples of viruses that follow the lytic cycle include the flu virus (influenza), the common cold virus (rhinovirus), and many bacteriophages that infect bacterial cells.

The lysogenic cycle, on the other hand, is characterized by the integration of the viral genetic material into the host cell's genome, allowing the virus to remain dormant for a period before switching to the lytic cycle.

Hence , D is the correct option

To learn more about  lytic cycle

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the human lineage began to diverge from those of other primates about

Answers

C. 6 million years ago

Hi, what is the Calvin cycle or light-independent reaction, and what is the light-dependent reaction? pls, explain what happens on the stage.

Answers

Answer:

The Calvin Cycle is a process used by plants to turn Carbon Dioxide from the air into Sugar. Sugar is the food that autotrophs need to grow.

Celvin cycle is the reaction used by green plants to convert carbon dioxide into carbohydrates like glucose

The light dependant reaction is

The reaction which depends on sun light and ends right after light goes

Like NADPH formation

which test measures the flexibility of the lower back and hamstrings

Answers

Answer:

The Sit and Reach Test

Explanation:

The Sit and Reach Test is one of the linear flexibility tests which helps to measure the extensibility of the hamstrings and lower back. It was initially described by Wells and Dillon in 1952 and is probably the most used flexibility test.

Label the following with
N (neutron), P (proton),
E (electron)
___Negative charge
___ Atomic number ___determination
___ Atomic mass determination
___ Involved in bonding
___ Positive charge
___ when gained or lost creates ions
___ Neutral charge
___ Found in nucleus

Answers

Answer:

E, P, N and P, E, P, E, N, N and P

Explanation:

I am pretty sure the answers would go like this (in the order you have here):

1. Electron (they have a negative charge)

2. P (The atomic number is determined by the number of protons)

3. N and P (The atomic mass is determined by how many Neutrons and Protons there are in the atom)

4. Electron (they are usually involved in bonding)

5. Proton (they have positive charge)

6. Electron (ions are created when an atom has gained or lost electrons)

7. Neutron (they are neutral)

8. Both Neutrons and Protons (they stick together inside the nucleus)

I am not entirely sure why the atomic number determination has 2 blanks since it is only determined by protons, but I hope this helps. I havent studied this for a while but those are the best answers I can provide and have checked them with my books so I hope they are correct. Good Luck!

Dragon

what part does chlorophyll play in photosynthesis?

Answers

Answer:

Explanation:

Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar

draw the flow chart showing the sequential order of reproductive stage and fertilization​

Answers

The sequential order of reproductive stage and fertilization starts with the

male and female sex cells being produces through meiosis. The male sex

cell which is the sperm is produced in the testes while the female sex cell

which is the egg is produced in the ovary.

During copulation, the sperm cells are released into the vagina which then

swims through the cervix and uterus to the fallopian tubes where the

fertilization occurs.

There is then movement of the zygote formed from the fertilization to the

uterus where development occurs.

Please refer to the attachment .

Read more about Fertilization here https://brainly.com/question/1154065

pushing your body to its limits to encourage your body to make physiological changes describes which principle?

Answers

the overload principle

Can someone explain what polymers, monomers, and isomers are to me? What is the difference between isomers and polymers? Thanks, I'm studying for a test in about a week :)

Answers

Answer:

A monomer is a single unit of a substance (eg. Amino acid). A polymer is a chain of monomers (eg protein). An isomer is a molecule of an element with the same chemical formula but a different chemical structure (sucrose and maltose).

Explanation:

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