Sex Determination & Sex Chromosomes 3

Question 1

Male carries what type of sex chromosomes?

Answer 1

One X & one Y

Question 2

Females carry what type of sex chromosomes?

Answer 2

Two X chromosomes

Question 3

Autosomes

Answer 3

Chromosomes that are not sex chromosomes

Question 4

Dosage compensation

Answer 4

When the level of expression of many genes on the sex chromosomes is similar in both sides

Question 5

______________ is necessary in some species to ensure genetic equality between the sexes

Answer 5

Dosage Compensation

Question 6

Dosage compensation happens in mammals when the female goes through _____________

Answer 6

X-chromosome inactivation (Turns off one of their X chromosomes)

Question 7

Sex-linked genes

Answer 7

Genes found on only one sex chromosome but not both (ex. X-linked genes found only on X chromosome)

Question 8

Pseudoautodomal genes

Answer 8

Found on both X & Y chromsomes

Question 9

X-linked alleles

Answer 9

Genes that are physicall located within the x-chromosome

Question 10

X-linked recessive

Answer 10

The allele causing the disease is recessive & located on the X-chromosome

Question 11

Recipprocal cross

Answer 11

Where the sex & pheotype are reversed