Exam 24: Chromosomal Basis of Inheritance

In the following question, the distance between alleles on a chromosome is visualized. Which of the following pairs of alleles would be most likely to cross over?

If a person inherits two X chromosomes, this individual will be

If an individual has a XYY genotype, they are classified as having

Which of the following sex-linked disorders was common among the royal families of Europe, and all of the affected males could trace their ancestry to Queen Victoria of England?

List and describe the four X-linked recessive disorders.

In Down syndrome, the Dart gene causes mental impairment by increasing the levels of pyrimidines in the blood.

Genes on the same chromosome are more likely to assort independently if

Genes on which chromosome determine if the sex of a child will be male or female?

Which of the following refers to the loss of a portion of a chromosome?

All of the genes on a single chromosome form a

A normal male marries a color-blind woman. What percent of their female children will be color-blind?

Which one of the following x-linked disorders is caused by an abnormal number of repeat sequences in the genome and is the most common cause of inherited mental impairment?

If a person has a portion of number 5 chromosome missing, they may have

If a chromosomal segment is turned around 180°, the chromosomal mutation is termed a(n)

If a person has short stature, a fold in the eyelids, fissured tongue, and mental impairment, they have

In fruit flies, bar eye is inherited by a dominant X-linked allele (B for bar). If a heterozygous bar-eyed female is mated to a non-bar-eyed male, what will be the expected ratio of phenotype given four offspring?

List the possible zygote combinations that could occur if a man has one nondisjunction occur during meiosis II, but the woman's eggs are normal.

Generally, it is not possible to determine whether nondisjunction failed to occur in oogenesis or spermatogenesis. However, it is possible to assert that XYY results from nondisjunction during

A person with an XO genotype is classified as having

The trait diagrammed in Figure 24.4 is inherited as a(n)