AP BIOLOGY

HEREDITY

LINKED GENES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A gene on the Y chromosome that determines maleness is called:
A
AB
B
SRY
C
ABC
D
Barr Body
Explanation: 

Detailed explanation-1: -The SRY gene provides instructions for making a protein called the sex-determining region Y protein. This protein is involved in male-typical sex development, which usually follows a certain pattern based on an individual’s chromosomes. People usually have 46 chromosomes in each cell.

Detailed explanation-2: -SRY (which stands for sex-determining region Y gene) is found on the Y chromosome. In the cell, it binds to other DNA and in doing so distorts it dramatically out of shape. This alters the properties of the DNA and likely alters the expression of a number of genes, leading to testis formation.

Detailed explanation-3: -One gene, SRY (for sex-determining region of the Y chromosome), determines sex in humans; although many genes are involved, SRY is the key switch and individuals with SRY develop into males, while those without it develop into females.

Detailed explanation-4: -(text messaging, Internet slang) Abbreviation of sorry.

There is 1 question to complete.