Question

Two heterozygous purple-stemmed plants are grown. Each parent has the genotype ANL/anl. Pollen from one of the plants is used to pollinate the other, and the resulting seeds are harvested. What traits would you expect in the plants grown from these seeds? A. All of the offspring plants will have purple stems. B. All of the offspring plants will have green stems. C. About half of the offspring plants will have purple stems, and half will have green stems. D. Most of the offspring plants will have purple stems, but some will have green stems.

Answer 1

D. Most of the offspring plants will have purple stems, but some will have green stems.

Step-by-step explanation:

These plants are heterozygous, which means that they have two different alleles of the same gene. One allele, the ANL one, is going to dominate over the other resulting in purple-stemmed plants, which is the color that ANL encodes for.

If we draw a Punnet Square, we can see that the majority of the offsprings will have purple stems, but some of them, the ones that have two recessive alleles, will have green stems.

• ANL ANL: purple stems

• ANl anl: purple stems

• anl ANL: purple stems

• anl anl: green stems

║ ANL ║ anl

ANL║ANL ANL ║ ANL anl

anl ║anl ANL ║anl anl