Question

A heterozygous tall pea plant is crossed with a short plant. The probability that an F1 plant will be tall is ?

Answer 1

1/16.

Answer 2

This would depend on whether or not shortness is a dominant or recessive trait. If it were dominant, it would be a 25% chance, if it were recessive, there would be no chance of a tall plant..

Answer 3

Here's a Punnett Square:



The heterozygous tall parent is on top. (T t)

The short parent is on the left side. (t t)

You see here, there's a 50% chance that the offspring will be tall,
because 2 of the 4 squares have the genotype (T t).

A capital T stands for "tall."

Answer 4

@mayankdevnani

Gregor Mendel did find that tallness is actually a dominant trait, in pea plants.

And if one parent is tall, and heterozygous,
then that parent's genotype would be (T t).

Since tallness is dominant, shortness would be recessive.
And so, a short pea plant would have the genotype (t t).

Shortness is a recessive trait.
So, if a (T t) parent crosses with a (t t) parent,
then there's actually about a 50% chance that the offspring will be tall.