M4 Flashcards
define monohybrid cross
mating b/w two organism with different alleles
In F1 what you would expect the genotype ratio to be. What about the phenotype
Aa 1/2. Dominant trait fully expressed
what word best describes the fertilization of plant ovules by pollen from the same plant
fertilization
selfing
filial parentification
selfing
what ratio would you expect from an f2 plant
3:1 ratio
True or False
inheritance in monohybrid cross is not sex independent
false
what are Mendel’s 3 postulates in order
unit factors (alleles) in pairs
dominant and recessive
segregation (randomly)
explain how a testcross would work
cross between and Indvidual’s genotype who is unknown with a homozygous recessive individual for the gene in question
dihybrid cross
mating between two organisms with different alleles at two given loci of interest
what is the predicted phenotypic ratio for a dihybrid cross
9:3:3:1
what is product law
= AND
pr (a &b)= pr(a) x pr(b)
What is Mendel’s 4 postulates
alleles in pairs
dominant and recessive
segregation
random assortment
which is not involved in mendel’s 3:1 (mono) ratio and 9:3:3:1 dihybrid ratio
segregation
recombination
independent assortment
random fertilization
recombination
T or F
most genes have more than two alleles for
t
define trihybrid cross
mating b/w two organism with the different alleles at three given loci of interest
define polygenic trait
a trait that is determined multiple genes
