CH.8

Question 1

monohybrid cross

Answer 1

is a cross between true breeding parent plants that differ in only one character.

Question 2

monohybrid cross uses and genetic and phenotypic frequencies

Answer 2

monohybrid cross- you’re only looking at one trait (ex: flower color) genetic:alleles phenotypic frequencies- physical apearence

Question 3

Know what law of dominance is

Answer 3

Mendel discovered .in a hetero zygote, one trait will conceal the presence of another trait for the same characteristic

Question 4

Ressive traits

Answer 4

what you inherit from your parents that looks a bit different from how your parents look ex: PARENTS : freckles CHILD: no freckles

Question 5

Know ABO blood grouping

Answer 5

ABO blood grouping are multiple alleles that make up a person’s genes

Question 6

Rh factor

Answer 6

an inherited protein that can be found on the surface of the red blood cell positive or negative blood group
a mother that is Rh- and a baby is Rh+ is bad. if the Rh+ babys blood cells get into mom her immune system will think they are invaders hence mothers body will create antibodies to cross placenta and iliminate child (permanent brain damage, death)

Question 7

Know what hemolytic disease of the newborn is and what causes it

Answer 7

It is a blood disorder that causes a baby’s red blood cells to break down quickly, it occurs when the mother and babies blood type are incompatible

Question 8

Back cross

Answer 8

the mating of a hybrid organism (offspring of genetically unlike parents) with one of its parents or with an organism genetically similar to the parent

Question 9

Test cross

Answer 9

a test cross is used to determine
the unknown genotype of the
organism expressing the dominant
trait.