Question

A species of plant is discovered in which individual plants produce either white or purple flowers....

A species of plant is discovered in which individual plants produce either white or purple flowers. True breeding plants that have short stems with white flowers are crossed with true breeding plants that have tall stems and purple flowers. The resulting offspring all have tall stems with purple flowers. When one of these tall, purple-flowered offspring is crossed with a short, white-flowered plant, plants with the following characteristics were obtained in equal proportions.
White flowers on tall stems
Purple flowers on tall stems
White flowers on short stems
Purple flowers on short stems
Given the information above, which of the following is most likely true?

Question 48 options:

The white-flower allele and the tall-stem allele occur at the same locus.

The genes for flower color and stem length are closely linked.

Extensive crossing-over between the purple-flower allele and the white-flower allele has occurred.

The genes for flower color and stem length are not linked.

Independent assortment does not occur in this species of plant.
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Answer #1

PPTT (purple tall) × pptt (white short) = PpTt (purple tall)

PpTt × pptt

All given progenies in equal proportions are formed

Answer :

The genes for flower color and stem length are not linked.

This is the correct answer because all the given progenies are formed in equal proportions. This is possible only when the genes are not linked. When the genes are not linked to each other, they assort independently and show mendelian inheritance.

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