Ch. 7 Complex Patterns of Inheritance

Question 1

genetic crosses involving 2 traits

Answer 1

dihybrid cross

Question 2

XY and XX. determined by male since they carry both X and Y rather than XX. egg always carries and X. sperm can carry X or Y

Answer 2

sex determination

Question 3

genes located on X or Y chromosome

Answer 3

sex linked genes

Question 4

located on X chromosome. males are more likely to inherit recessive X linked diseases because they only have one X chromosome to be functional. female are less likely because they ave two X chromosomes, allowing them to have another dominant allele. only females can be carriers of recessively inherited traits.

Answer 4

X linked genes

Question 5

hemophilia, red green colorblindness, muscular dystrophy

Answer 5

X linked diseases

Question 6

gaurantees that females only get one dose of proteins produced by genes on one of the two X chromosomes. one chromosome is inactivated when a string of RNA is wrapped around it. random and irreversible

Answer 6

X inactivation

Question 7

located on Y chromosome. father to sons

Answer 7

Y linked genes

Question 8

triggers series of events that develops testes

Answer 8

SRY (Sex determining Region on Y chromosome)

Question 9

family tree that follows inheritance of a genetic trait through many generations

Answer 9

pedigree