bio final ch 23

for a dihybrid cross the punnet square will have how may boxes?

16

how many different gamete combinations are there for a parent with this genotype: RrYy

4

the genotype for a homozygous dominant trait would be written as

TT

the genotype for a heterozygous trait would be written as

Tt

alternative forms of a gene that influence the same trait and are found at the same location in homologous chromosomes are called

alleles

mendel's law of segregation implies that the two members of an allelic pair

are distributed to separate gametes

when two traits coexist, or are displayed at the same time, such as a black and white cow, it is called

codominance

a cross that involves two traits is called a ____ cross

dihybrid

for an individual with a heterozygous genotype, which trait will be expressed physicaly

dominant trait

which gender has two X chromosomes (XX)

females

this refers to a pair of genes or alleles that an individual inherits from their parents

genotype

assume green is dominant and yellow is recessive. what would be the phenotype for this individual GG

green

assume green is dominant and yellow is recessive. what would be the phenotype for this individual Gg

green

who is knowns as the father of genetics

gregor medel

in a testcross, an organism with a dominant phenotype, but unknown genotype is crossed with which of the following to establish its gentoype

homozygous recessive

a cross between a red flower and a white flower produces a pink offspring. what type of inheritance does this display?

incomplete dominance

this law states that allele pairs separate independently during the formation of gametes

law of independent assortment

which gender has one X chromosome and one Y chromosome (XY)

males

when more than 2 different alleles exist for the same trait, like blood type for example it is known as

multiple alleles

if an organism shows a recessive phenotype, such as short pea plants, its genotype can be

only tt

in genetics, P stands for

parent generation

this refers to an individual's physical charactertics

phenotype

a type of inheritance pattern controlled by 2 or more genes each with 2 alleles, which results in a range of variation, for example eye color, hair color, skin color, and height

polygenic inheritance

a genetic trait that is only located on the X or Y chromosomes is known as

sex-linked trait

the genotype for a homozygous recessive trait would be written as

tt

assume green is dominant and yellow is recessive. what would be the phenotype for this individual gg

yellow