Sex Linked Traits

Question 1

What is Autosomal inheritance

Answer 1

Autosome refers to all the chromosomes except the sex chromosome

Autosomal inheritance refers to a allele which is expressed on the 22 chromosomes pits and not the sex chromosome

Question 2

Female chromosomes

Answer 2

XX Chromosomes

Question 3

Male chromosomes

Answer 3

XY
* Male sex chromosome is the only chromosome pair that isn’t homologous

Question 4

Sex linked

Answer 4

An allele found the the sex chromosome (X OR Y), and expression is based on gender

Question 5

X linked traits

Answer 5

*Refers to how traits or disorder on the X chromosome are expressed
* If a male receives a X chromosome that carries a recessive allele for a disorder they’ll have the disorder, because they only have 1 X chromosome.
*Whereas females if they receive a X chromosome that carries a recessive allele for a disorder. They’ll just be carriers because they have a second unaffected X chromosome, which mask the recessive chromosome. But if they both have the recessive alleles then they’ll be affected

Question 6

Hemophilia

Answer 6

When you are cut, the blood doesn’t clot because not enough blood clotting proteins are present or non functional

Question 7

Y linked traits

Answer 7

Only males can pass on these traits as they are only found in Y chromosomes, which is the chromosome males give

Since only males have Y chromosomes, they are the only ones affected

Question 8

X linked traits (disorders)

Answer 8

*Traits that are expressed only in the X chromosome
*Males are usually more affected as it only takes ome X chromosome to become affected
* women are usually carriers as then have two X chromosome, and the unaffected one mask the affected one