A short pea plant is crossed with a tall, heterozygous pea plant. Use a Punnett square to determine the probability of short offspring.(1 point)

Question

Responses

0%
0% - no response given

25%
25% - no response given

50%
50% - no response given

75%

Answer 1

To determine the probability of short offspring from the cross between a short pea plant and a tall, heterozygous pea plant, we first define the genotypes:

• Let "T" represent the allele for tallness (dominant).
• Let "t" represent the allele for shortness (recessive).

The short pea plant will have the genotype "tt", while the tall, heterozygous pea plant will have the genotype "Tt".

Now we can set up the Punnett square:

      T    |    t
-------------------
t   |   Tt   |   tt
-------------------
t   |   Tt   |   tt

From this Punnett square, we can see the possible offspring genotypes:

• 2 squares result in "Tt" (tall).
• 2 squares result in "tt" (short).

Thus, the ratio of the offspring will be:

• 2 tall (Tt) : 2 short (tt) or 1 tall : 1 short.

This means that 50% of the offspring are expected to be short.

Answer: 50%