Thinking about decision A chromosome has the segments labeled below: What type o

Question

Thinking about decision A chromosome has the segments labeled below: What type of chromosome mutations (abnormalities) are required to alter that chromosome to each of the following chromosomes? In a mutant Jenson chromosome B is present in there copies whereas all other chromosomes are in the disomic (diploid) state. Jenson weed pollen grains do not tolerate multiple chromosomes and are incapable of fertilization: However, the oxygen is capable of fertilization in the friction state. If you self-fertilize a trisomic weed plant, what zygotes would be formed? Tell which zygotes are diploid and which are trisomic. Assume that only the univalent mode occurs during

Explanation / Answer

a. True..... During recombination, it is quite possible that the ends of recombining regions are deleted, resulting in aneuploidy.

b. True... After chromosomal deletion, a single copy of gene will be left. This copy may be functional and may produce enough protein requisite for the wild type condition to occur.

c. True.... During the deletion process, it is quite possible that the dominant alleles are deleted. Most of the times, those alleles are deleted whose fitness is least.

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