6 - Heredity

Question 1

Define homozygous

Answer 1

 same allele of a particular gene on homologous chromosomes
 i.e. both alleles express the same version of a trait
 e.g. blond hair (bb), black hair (BB)

Question 2

Define heterozygous

Answer 2

 different alleles of the same gene
 i.e. alleles code for different expressions of the same trait
 e.g. Bb

Question 3

Where do sex linked traits come from?

Answer 3

Genes on the X chromosome.

Question 4

Are the 23 chromosomes homologous?

Answer 4

XX are, XY are not