Answer:
3.4
Explanation:
If the purple flower is heterozygous:
Pp x pp
Pp Pp pp pp
the expected ratio of purple flower offspring to yellow flower offspring would be 50:50.
Chi square = [tex]\frac{(O - E)^2}{E}[/tex] where O = observed frequency and E = expected frequency.
phenotype O E Chi square
purple 87 73 [tex]\frac{(80-73)^2}{73}[/tex] = 0.67
yellow 59 73 [tex]\frac{(59-73)^2}{73}[/tex] = 2.68
Total = 0.67 + 2.68 = 3.35 to the nearest tenth = 3.4
Degree of freedom = 2 - 1 = 1
Critical Chi square value (alpha = 0.05) = 3.84
SInce the critical Chi square value is greater than the calculated value, the null hypothesis is accepted.
DUE IN 1 HOUR HELP! Please answer
Compare the carrying power of a small, mountain stream in the mountains with that of a slow large river that is about to enter the sea.
(Note: Needs to be detailed) [this is more of a Geology question]
Answer:
The carrying power of a small, mountain stream in the mountains with that of a slow large river that is about to enter the sea is explained below in details.
Explanation:
A mountain stream is a river or stream, normally with a sheer slope, running down a mountainside. Stream velocity is most noted in midstream near the exterior and is crawling along the stream bottom and shores due to friction.
The river stalls down at the entrance, so it doesn't have the energy to carry all the sand, dirt, and clay anymore. These deposits create the flat, regularly triangle-shaped tract of a delta.
An example of two organisms living
together is...
A. a bird gliding on wind currents.
B. a flower opening in the morning.
C. a dandelion growing in your lawn.
Answer:
c
i think
Explanation:
What cellular structure is responsible for the movement that occurs in image 3?
IMAGE ABOVE
O cytoplasm
O nuclear membrane
chromosomes
spindle fibers
Answer:
Spindle fibers because they split the cell
Explanation:
The allele for a widow's peak has complete dominance over the allele for a straight hairline (w). What is the probability of two parents heterogeneous for a widow's peak (Ww) having an offspring without a widow's peak?
Pls help I willl give Brainly
Answer:
C
Explanation:
Answer:
I believe the answer is Z= cerebrum used for thinking, memory and processing sensory information
Explanation:
hope this helps xx
Which of the following is not a function of the cell membrane?
Answer:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Explanation:
This is what the cell membrane does so if any of these are an answer choice then use process of elimination to figure out which one is correct
Answer:
its does not provide energy
Explanation:
What is the role of mRNA during translation?
A. forms parts of ribosomes
B. carries codes from the DNA in the nucleus to the site of protein synthesis
C. Carries amino acids to the mRNA for correct placement into the protein chain
Answer:
I think it is C if I am wrong i am srry
Wheat has flowers similar to those in Fig. 5.1, but reproduces by self-pollination. Explain the consequences of self-pollination for a population of plants.
Answer:
The transfer of mature pollen grain from anther of the flower to the stigma of the same flower of the same [species is called self pollination.
Generally, the transfer of pollen grains by wind,animals,and water to stigmas is called pollination. It is a means of vegetative propagation which ensures reproduction.
Therefore during self pollination, the same genes are distributed from one generation to another. Thus genetic purity is ensured. It also ensured reproductive success. because there is little chance of the pollen grain getting lost in transit. It is also certain a particular plant would always breed true.
Additionally it prevent the process of transfer of genes in some transgenic crops( rice, maize) where through genetic engineering some genes are introduced in their genome.
The only negative effect is lack of genetic diversity. Therefore after a period of time the plants get weak and prone to diseases and infection. Because of poor resistant from lack of variation.
Explanation:
what is the role of dna in determining an
organisms trait
How is sexual reproduction (meiosis) involved in cystic fibrosis? How is asexual reproduction (mitosis) involved in cystic fibrosis?
Meiosis is the cell division that enables sexual reproduction. It consists of two successive cell divisions, after which four genetically different cells are obtained, which contain half the number of chromosomes as the mother.
What is the main function of the immune system?
A.to package wastes and remove them from the body b. To fight diseases and other invaders C. To take the food we eat and turn it into nutrients for the body to use d. To send electric through the body
Answer:
c
Explanation:
Your skin cells and muscle cells have different characteristics. Finish this statement: The proteins in your skin cells and muscle cells are
a
the same
b
different
Answer:b
different
Explanation:
plz help will give brainliest
Answer:
Explanation:
Tropical Zone: humid, hot, wet, rainforests
Temperate Zone: forests and grasslands, four seasons
Cold Zone: windy and snowy, mountains and highlands
Which is generally true of all terrestrial biomes?
Answer: they're based on land
Explanation:
ASAP I WILL MARK BRAINLIST
What is the product of translation?
A. A strand of RNA
B.A nucleic acid chain
C.A strand of DNA
D.An amino acid chain
When a drop of food dye is placed in a flask of water, the dye molecules spread slowly through the entire volume of the water until they are evenly distributed. Name this type of transport.
a. diffusion
b. osmosis
c. molecular pumps
d. facilitated diffusion
The twisted ladder shape of DNA
A.
triple helix
B.
helical ring
C.
double helix
D.
hexagonal ring
Answer:
C. Double helix
Explanation:
The twisted ladder shape that DNA has can also be called a double helix.
It is in the shape of a helix, which is similar to a 3D spiral shape.
It is called a double helix because DNA is made up of two DNA helix strands that are intertwined.
So, C is the correct answer.
Answer:
The answer is C. double helix.
Explanation:
DNA is constructed through two threads or strands winded around each other in the shape of a twisted ladder - hence one of the shape of a DNA's most prominent nicknames (that is, twisted ladder). Additionally, it is even more commonly known as a double helix. In fact, the term double helix was especially created to describe DNA!
In an experimental study, the barnacle species Balanus was removed from rocks exposed at low tide. The barnacle species Chthamalus then established in the habitat where Balanus previously thrived. This provides evidence that:
Explanation:
There are two kinds of niches demonstrated by two barnacle species Balanus and Chthamalus where Balanus is being realized niche as it
is the actual habitat and this species interest with other species and other aspect affects the survival like competition and predation etc. Fundamental niche is demonstrated by Chthamalus as they can easily live and thrive in thehabitat and can multiply too and it will be still greater as opposed to realized.The right answer is, 'Chthamalus's basic niche is greater than its niche'
who come first egg or hen ?
Pls someone help! :(
Answer:
is this for examz hahahah
The mRNA molecule contains the codon
that is read during translation. What
molecule contains the anticodon that is
complementary to this codon?
A. nucleosomes
B. amino acids
C. TRNA
Answer:
it is TRNA
Explanation:
HOPE U ENJOY ANSWER
explains why energy is needed for active transport?
Answer: Active transport requires energy to move substances across a plasma membrane, often because the substances are moving from an area of lower concentration to an area of higher concentration or because of their large size.
Explanation: Learned About it in class please give me brainliest
A student is collecting the gas released from a plant when exposed to sunlight. The gas being collected is:
A) water
B) Carbón dioxide
C) ATP
D) oxygen
Answer:
D
Explanation:
Plants absorb carbon dioxide and releases oxygen, that is part of the reason trees are important to the earth because one, many animals live in forests, and two, they give oxygen to the earth.
How many grams are in 12 teaspoon of salt if 5.00 grams of salt are in 1.00
teaspoon?
Answer:
There are 60 grams of the salt in 12 teaspoon of it
Explanation:
We can rephrase the question by saying, if 1 teaspoon has 5.00 grams of salt, how many grams does 12 teaspoon have? We can then equate the answer by doing the following
1 teaspoon = 5 grams
12 teaspoon = ?
Cross-multiply
? = 12 × 5/1
? = 60 grams
There are 60 grams of the salt in 12 teaspoon of it
Three stages of development from an embryo from a fish salamander turtle and chicken . What information about evolutionary relationships can be inherited from the drawings
Answer:
Zygote, cleavage and hatching are embryogenic stages of fish, salamander, turtle and chicken.
Explanation:
The main embryogenic development stages of fish, salamander, turtle and chicken were zygote, cleavage and hatching. all these stages are present in these organisms which shows that fish, salamander, turtle and chicken are evolved from a single ancestor. Due to similar embryogenic development stages indicates close evolutionary relationships among these organisms.
In 1-3 sentences, explain the structure and function of an enzyme.
Answer: Enzymes are life’s great facilitators. They create the conditions needed for biochemical reactions to happen fast. The general name that chemists use for chemical entity that increases the speed of a reaction is “catalyst.” Enzymes are biological catalysts they catalyze the chemical reactions that is happen inside living things.
Explanation:
What is the probability of producing a roan (red and white) cow when a white cow is crossed with a red cow?
Cross: RR x WW
Answer:
A cross between a roan bull (Ww) and a white cow (ww) produces roan and white phenotypes in a 1:1 ratio.
Explanation:
Two alleles are influencing the color of the hair of the cow-W red and w white.
These alleles show that a hybrid Ww has red hair. The genotype of the bull is Ww, WW is red and ww is white. So, mixing the red and white cows is 1:1.
Decomposition is the process by which:
Carbon atoms are released into the soil
Carbon is converted to CO2
Organisms obtain energy by breaking down glucose
Answer:
Decomposition is the process by which carbon atoms are released into the soil.
Explanation:
Organic decomposition involves the process of degradation of a living organism by releasing its elemental components.
In the process of decomposition, chemical elements such as carbon are released mainly in the soil, contributing to its enrichment and use by other living beings.
The release of carbon —product of decomposition— to the soil, for recycling, is part of the carbon cycle.
The other options are not correct because:
The conversion of carbon into CO₂ is combustion. Organisms obtain energy by breaking down glucose is part of cellular respiration.Explain digestion Process.
Answer:
Each bite passes through several "cells" within the digestive system, and each of them has a specific function in terms of processing uneaten food.
Explanation:
The food begins to be processed in the mouth and prepared for the upcoming digestion process.
Saliva is important for food processing, among other things because it contains the enzyme ptyalin (alpha-amylase), which is responsible for the breakdown of starch and glycogen and continues its activities in the stomach.
Well-chewed food passes through the pharynx to the esophagus. During the swallowing of food, the opening of the trachea is closed, although it is possible that some crumb of food strays and causes a strong cough, which expels the excess from the trachea.
From the esophagus, food comes into the stomach, which is surrounded by ribs. Stomach acid is extremely strong and enables the conversion of food into liquid, which facilitates the further process of digestion.
Food from the stomach continues its way through the digestive tract to the duodenum, from the duodenum it reaches the small intestine.
Food processing in the large intestine is the last phase of digestion of food in the digestive tract. When the waste materials reach it, they need up to 24 hours to pass through the large intestine and reach the other end.
An ecosystem usually contains a single kind of habitat.
True or false