6.1 Reproduction

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Question 6

Medium

In tomato plants, the allele for purple stem ( $P$ ) is dominant to the allele for green stem ( $p$ ).

Two heterozygous tomato plants ( $P p$ ) 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 $D$ :

$GametesPpPABpCD\begin{array}{c|c|c} \text{Gametes} & P & p \\ \hline P & A & B \\ \hline p & C & D \\ \end{array}$

[2]

State the probability (as a percentage) that an offspring will have a green stem.

[2]

A grower plants a batch of 12 seeds from this cross. Explain why there might not be exactly 3 offspring with green stems.

[2]

6.1 Reproduction

Question 6

6.1 Reproduction Questions

6.1 Reproduction

Question 6

6.1 Reproduction Questions