Dosage Compensation in Mammals Typically Involves the Random Inactivation of One

question 48

Short Answer

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." Using appropriate gene symbols,diagram a mating between a black male and a calico female.Give the phenotypes and genotypes of all the offspring.

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Definitions:

Tort

A legal wrong or infringement of a right leading to civil legal liability.

Nuisance

An act, condition, or thing that is considered an inconvenience or annoyance, and can sometimes give rise to a legal claim.

Bank's Carelessness

Negligent or inattentive actions by a banking institution that lead to loss or damage for a customer.

Lighting Setup

The arrangement and configuration of lighting equipment to achieve desired visual effects in photography, film, or stage production.