Answer:
In Mendel’s crosses, the recessive trait is visible in the F2 generation, but not the F1 generation.
After crossing a tall pea plant with a short pea plant, all of Mendel’s pea plants were tall because it is the Dominant trait.
For seed color, the F2 generation produced both yellow and green seeds because there are two different alleles for each gene.
If you'd like to know more, read on:
Alleles are variants of genes that control traits. There are two alleles called the dominant and recessive allele.
A dominant allele is a trait that is physically expressed even when coupled with a recessive allele. A recessive allele on the other hand is the trait that is masked by the dominant allele.
This is what happened in Mendel's crosses. He crossed a true-breeding tall plant with a true breeding short plant.
P generation
TT - Tall plant
tt - Short plant
The result in the F1 generation that consisted only of Tt plants, where the dominant allele was expressed.
T T
t Tt Tt
t Tt Tt
Then he crossed the F1 generation to produce the F2 generation.
Tt x Tt
The results:
T t
T TT Tt
t Tt tt
As you can see the resulting offsprings shows that the recessive trait occurring, tt. This means that there was a 25% chance that the off springs produced would short plants and 75% that the offsprings produced is tall. This applies also to the color of the seeds if we cross the pea plants based on the color of seeds.
Explanation:
Heated air inside a ballon causes it to rise up in the sky because of helium,helium is the second Antony number that has the lowest mass maybe when the air cools the balloon it causes osmosis to make it change its mass.
The statement which best describes artificial selection as compared to natural selection is: C. In artificial selection, the passing on of traits is determined by human choice.
<h3>What is artificial selection?</h3>
An artificial selection can be defined as a process that typically involves human beings breeding living organisms such as <u>animals</u> and <u>plants</u> to favor a desirable characteristic or trait.
This ultimately implies that, the passing on of traits or characteristics is generally determined by human choice in artificial selection rather than in natural selection.
Read more on natural selection here: brainly.com/question/524043
Answer:
<h2>Facilitated diffusion
.</h2>
Explanation:
1. Diffusion: it is the net passive movement of particles from higher concentration to lower concentration. Diffusion continues until the concentration of substances is equal through out.
2. Facilitated diffusion: is the process of passive transport of molecules or ions across a biological membrane and requires (via) a specific carrier protein.
3. Facilitated diffusion is passive type and require specific protein and it requires no energy from the cell.
4. It requires specific proteins through which molecules move from one side to another.