Question

If a pea plant has a recessive allele for green peas, it will produce

green peas if it does not also have a dominant allele for yellow peas.
green peas if it also has a dominant allele for yellow peas.
yellow peas if it does not also have a dominant allele for green peas.
both green peas and yellow peas if it also has a dominant allele for yellow peas.

Answer 1

d

Answer 2

Recessive means that the plant needs a homozygous genotype for that allele to produce green peas.

Let's say G (capital) is the allele for yellow peas and g (lowercase) is the allele for green peas. yellow is dominant and green is recessive.

In this case there are 3 genotypes. GG, Gg and gg.
If a genotype consists 1 or 2 dominant alleles it will always express that fenotype (the color)
For a recessive allele to express, it needs a homozygous genotype (gg). (homozygous means 2 of the same).

Your answer is A because the peas will be green if the genotype does not have a dominant allele.

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Answer 3

ya thanks