6.1 Reproduction

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Question 22

Medium

In pea plants, the allele for yellow seeds ( $Y$ ) is dominant to the allele for green seeds ( $y$ ).

Two heterozygous yellow-seeded plants ( $Y y$ ) are crossed.

Complete the Punnett square below to show the possible genotypes of the offspring by identifying the genotypes represented by the letters $A$ , $B$ , $C$ , and $D$ :

$GametesYyYAByCD\begin{array}{c|c|c} \text{Gametes} & Y & y \\ \hline Y & A & B \\ \hline y & C & D \\ \end{array}$

[2]

State the probability (as a percentage) that an offspring seed will be green.

[2]

A single pod from this cross is found to contain 12 seeds. Explain why there might not be exactly 3 green seeds in this pod.

[2]

6.1 Reproduction

Question 22

6.1 Reproduction Questions

6.1 Reproduction

Question 22

6.1 Reproduction Questions