You are breeding two poly ploidy species of wheat. you cross the two different s

Question

You are breeding two poly ploidy species of wheat. you cross the two different species (parent 1 x parent 2) and obtain F1 hybrids. The following meiotic pairing is observed: F1 hybrid= 12 bivalents + 12 univalents

A) how many chromosomes are there in a non-dividing somatic cell of an F1 plant (what is the organisms ploidy?)

B) how many chromosomes are there in a non-dividing somatic cell of each parent (what is the organisms ploidy?)

C) for each parent identify whether the plant is diploid, autoploidy or alloployploid.

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Explanation / Answer

A. The non-dividing F1 plant has 12 bivalents+12 univalents. It has a total of 36 chromosomes.

B. There are 12 chromosomes each in the non-dividing somatic cell of the parent 2, whereas the number is 24 for parent 1.

C. Parent 1 is autotetraploid whereas the parent 2 is diploid.

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