t6-inheritance

Question 1

what are dominant alleles

Answer 1

always expressed even if there’s only one copy
-capital letter

Question 2

what are recessive alleles

Answer 2

only expressed if there are 2 copies and doesn’t have the dominant allele
-lowercase letter

Question 3

what are homozygous alleles

Answer 3

-identical for the same characteristic eg. AA or aa

Question 4

what are heterozygous alleles

Answer 4

-different for the same characteristic eg. Aa

Question 5

how can you get CF

Answer 5

-have 2 copies of the defective allele (c)
-inherit a defective allele from both parents

Question 6

what if you have one defective allele for CF

Answer 6

-you won’t have CF, but you’ll be a carrier

Question 7

how can you get polydactyly

Answer 7

-have a polydactyly allele and a normal allel (Cc)
-if you have a dominant allele, you’ll have it

Question 8

what is a genotype

Answer 8

the collection of alleles that determine an organism’s characteristics