Dosage Compensation in Mammals Typically Involves the Random Inactivation of One

question 5

Multiple Choice

Dosage compensation in mammals typically involves the random inactivation of one of the two X chromosomes relatively early in development.Such X chromosome inactivation often leads to phenotypic mosaicism.Assume that black fur in cats is due to the X- linked recessive gene b,whereas its dominant allele B produces yellow fur. A Bb heterozygote is a mosaic called "tortoise shell" or "calico." A mating between a black male and a calico female occurred.Give the phenotypes of the offspring.

• A)calico females and yellow males
• B)all calico regardless of sex
• C)calico females,black females,yellow makes,and black males
• D)calico females,yellow females,black males,and yellow males
• E)all black regardless of sex

---

Definitions:

Spells of Unemployment

Periods during which an individual is out of work and actively seeking employment.

Non-institutionalized Population

Individuals residing within a community rather than in institutions such as prisons, nursing homes, or psychiatric hospitals.

Labor Force

The total number of people who are eligible and available to work, including both the employed and the unemployed seeking employment.

Frictional Unemployment

A form of unemployment that occurs when people are between jobs or are entering the workforce for the first time.