Sex Linked Traits

Question 1

how many genes does the X chromosome carrie

Answer 1

More than 2300 genes

Question 2

What are sex linked traits

Answer 2

traits located on sex chromosomes usually found on the X chromosome

Question 3

what is the master gene used for male sex determination?

Answer 3

SRY gene

Question 4

where do recessive X-linked disorders occur more frequently in, males or females ?

Answer 4

MALES

Question 5

give examples of Xlinked disorders

Answer 5

Hemophilia
baldness
colour blindness

Question 6

Can a son inherit diseases from his father ????

Answer 6

NO

Question 7

What are Y linked disorders?

Answer 7

disorders where the allele is located on the Y chromosome and passed on from father to all his sons

Question 8

for notations, do you put any superscripts on Y chromosome?

Answer 8

NO

Question 9

In notations for sexlinked traits how is the dominant allele written?

Answer 9

Capitalized and written as a superscript
eg XA
(a is the superscript)

Question 10

What is hemophilia?

Answer 10

A disorder in blood clotting

Question 11

What happens if the SRY gene is present?

Answer 11

Testes form

Question 12

What happens if the SRY gene is absent?

Answer 12

Ovaries form