Genetics Part 2

Question 1

multiple allelism

Answer 1

more than two alleles of a gene in a population

Question 2

Incomplete Dominance

Answer 2

heterozygote is intermediate in phenotype (ex: red x white flowers = pink flowers)

Question 3

Codominance

Answer 3

heterozygote shows some aspect of the phenotypes of both homozygotes (ex: Type AB blood)

Question 4

Rh factor

Answer 4

Rh+ carries antigen, Rh- does not carry antigen

Question 5

Autosomal Recessive Pedigrees

Answer 5

unaffected parents can have affected children, all children of affected parents are also affected (can skip generation)

Question 6

Autosomal Dominant Pedigrees

Answer 6

only require one copy of the allele, doesn’t not skip generations

Question 7

X-Linked Recessive Pedigrees

Answer 7

mother gives 1 X chromosome to offspring, father gives X to daughters, Y to sons, sons carry X from mother

Question 8

Hemophilia

Answer 8

an X-linked recessive allele that affects a single protein involved in blood clot formation, mating btwn family members causes it to be passed down

Question 9

X-Linked Dominant Pedigrees

Answer 9

males and females equally likely to be affected, trait doesn’t skip generations

Question 10

Y-Linked Genes

Answer 10

only males exhibit the trait, which means ALL sons exhibit it too

Question 11

Mitochondrial Inheritance

Answer 11

associated with muscle weakness bc of deficiency of ATP production, all offspring with affected mothers have the trait