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Chapter 8: Problem 33

The kidney bean plant, Phaseolus vulgaris, is a diploid species containing a total of 22 chromosomes in somatic cells. How many possible types of trisomic individuals could be produced in this species?

Short Answer

Expert verified
The number of possible types of trisomic individuals that could be produced in the kidney bean plant, Phaseolus vulgaris, is 22.

Step by step solution

01

Understand the trisomy

Trisomic organisms contain one extra chromosome compared to normal diploid individuals. The extra chromosome could be any one out of the set of all chromosomes.
02

Identify the number of chromosomes in the species

We know that the diploid kidney bean plant, Phaseolus vulgaris, has 22 chromosomes. A trisomic individual would have one extra chromosome compared to a normal individual of the same species. This extra chromosome could be any one of the 22 chromosomes.
03

Calculate the number of possible trisomic individuals

The total number of possible types of trisomic individuals would be equivalent to the number of types of chromosomes in the plant since an extra copy of any one chromosome leads to trisomy. Therefore, there can be 22 possible types of trisomic individuals in this species.

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Most popular questions from this chapter

What is endopolyploidy? What is its biological significance?

Which changes in chromosome structure cause a change in the total amount of genetic material, and which do not?

Explain why small deletions and duplications are less likely to have a detrimental effect on an individual's phenotype than large ones. If a small deletion within a single chromosome happens to have a phenotypic effect, what would you conclude about the genes in the region affected by the deletion?

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