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Chapter 8: Problem 31

A diploid fruit fly has eight chromosomes. Which of the following terms should not be used to describe a fruit fly with four sets of chromosomes? A. Polyploid B. Aneuploid C. Euploid D. Tetraploid E. \(4 n\)

Short Answer

Expert verified
The term that should not be used to describe a fruit fly with four sets of chromosomes is 'Aneuploid'.

Step by step solution

01

Understanding the Definitions

A Polyploid is an organism or cell with more than two sets of chromosomes. Tetraploid has four times the haploid number of chromosomes in the cell nucleus, and \(4 n\) also refers to an organism or cell with four sets of chromosomes. Euploid is an organism or cell that has a chromosome number that's an exact multiple of a single set. An Aneuploid is not an exact multiple of the haploid number of chromosomes.
02

Choosing the Incorrect Term

Given the definitions, it can be determined that the term 'Aneuploid' should not be used to describe a fruit fly with four sets of chromosomes. This is because an Aneuploid organism or cell doesn't possess an exact multiple of the haploid number of chromosomes, which is different from the case described in the question.

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Most popular questions from this chapter

Why do you think that humans with trisomy chromosome 13,18 , or 21 can survive but other trisomies are lethal? Even though \(\mathrm{X}\) chromosomes are large, aneuploidy of this chromosome is also tolerated. Explain why.

Table 8.1 shows that Turner syndrome occurs when an individual inherits one \(\mathrm{X}\) chromosome but lacks a second sex chromosome. Can Turner syndrome be due to nondisjunction during oogenesis, spermatogenesis, or both? If a phenotypically normal couple has a color-blind child (due to a recessive X-linked allele) with Turner syndrome, did nondisjunction occur during oogenesis or spermatogenesis in this child's parents? Explain your answer.

The karyotype of a young girl who is affected with familial Down syndrome revealed a total of 46 chromosomes. Her older brother, however, who is phenotypically unaffected, actually had 45 chromosomes. Explain how this could happen. What would you expect to be the numbers of chromosomes in the parents of these two children?

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

Female fruit flies homozygous for the X-linked white-eye allele are crossed to males with red eyes. On very rare occasions, an offspring of such a cross is a male with red eyes. Assuming these rare offspring are not due to a new mutation in one of the mother's \(\mathrm{X}\) chromosomes that converted the white-eye allele into a red-eye allele, explain how a red-eyed male arises.
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