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.

Question

Biology

Leila Mckenzie

14 February, 05:51

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.

+3

Answers (1)

Know the Answer?

Shepherd · Answer 1

2)

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.