In pea plants, flower color is determined by gene P (allele P = purple; allele p = red). Pollen shape is determined by gene L (allele L = long pollen; allele l = round pollen).

A plant heterozygous for the dominant purple allele (P) and heterozygous for the dominant long pollen allele (L) was crossed with a plant that was recessive for both traits.

The phenotypes seen in the offspring are shown:

Purple, long 47

Red, round 47

Purple, round 3

Red, long 3

Answer Choices:

1) Genes P and L assort independently.
2) Genes P and L are close together on the same pair of homologous chromosomes.
3) Genes P and L are far apart on the same pair of homologous chromosomes.

Explanation:

given

In pea plants, flower color is determined by different genes,

allel P= purple;

allele p= red;

allele L=  long;

allele l= round

P is dominant on p and L is dominant on l.

Parents are as given;

PpLl crossed with ppll

F1 generation are;

PpLl, Ppll, ppLl and ppll,

as given  Purple, long ( PpLl)= 47;

Red, round ( rrll )= 47;

Purle, round ( Ppll )=3;

Red, long ( ppLl)= 3

Purple, long and Red, round each  are  47 in number, their genotype are same as parental genotype, so genes P and L are close together on the same pair of homologous chromosomes.

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