Question

When F1 plants were self - pollinated, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F 2 generation ​

Answer 1

Answer: genotype = 1 : 2 : 1

tall = 200

medium = 400

short = 200

Explanation:

TT * tt

Tt  Tt  Tt  TT     == F1 gen

f1 gen self pollination

Tt * Tt

TT   Tt   Tt   tt

genotype = 1 : 2 : 1

---------------------------------------

now sum of all = 800

1x + 2x + 1x = 800

4x = 800

x = 200

tall = x = 200

medium height = 2x = 400

short = x = 200

Answer 2

Answer: When self-pollinating F1 plants, out of 800 plants produced, 600 will be medium height, 200 will be tall, and 200 will be short. The genotype of the F2 generation will be Tt (medium height), TT (tall), and tt (short) assuming T is the dominant allele for tallness and t is the recessive allele for shortness.

Explanation:

Imagine you have some plants and you want to figure out what their babies will look like. So, you take two plants and make them have babies together. These babies are called F1 plants. They all look the same and have a special combination of traits from their mom and dad plant.

Now, you take some of these F1 plants and make them have babies with each other. These babies are called F2 plants. When the F1 plants have babies with each other, there's a chance that the babies will look different from each other. Some might be tall, some might be medium height, and some might be short.

To figure out how many of the F2 plants will look tall, medium height, or short, we use something called a Punnett square. It's like a chart that helps us predict what the babies will look like.

A Punnett Square for this looks like:

  T    t

T | TT | Tt

t | Tt | tt

When the F1 plants are self-pollinated, the possible genotypes in the F2 generation will be TT (tall), Tt (medium height), and tt (short). Assuming that tall and short plants are dominant and recessive respectively, we can use a Punnett square to predict the proportion of tall, medium height, and short plants in the F2 generation:

In this case, we found out that:

3/4 of the F2 plants will be medium height

1/4 of the F2 plants will be tall

1/4 of the F2 plants will be short

If we have 800 F2 plants, 600 of them will be medium height, 200 will be tall and 200 will be short.

This is an example of Mendel's law of segregation and dominance which states that traits are determined by genes and that dominant traits mask recessive traits.

Keywords: Mendel's law of segregation and dominance, Punnett square

For more information refer to the links below:

https://brainly.in/question/14540816#:~:text=Expert%2DVerified%20Answer&text=Law%20of%20segregation%20states%20that,also%20known%20as%20Mendels%20law.

https://brainly.in/question/29803772