8A- monohybrid crosses Flashcards
A monohybrid cross between two parents heterozygous for a complete dominance autosomal trait can produce how many types of offspring
3
whats codominance
codominance happens when two traits are independently and equally expressed
whats an example of codominance
blood type
what is a monohybrid test cross
it is performed by crossing an individual with an unknown genotype with a homozygous recessive individual. then, through observing the phenotypes of the offspring, we can determine whether the unknown parent is homozygous dominant or heterozygous. using phenotypes of the offspring to determine the parent’s genotype
contrast monohybrid crosses and test crosses
Monohybrid crosses are used to predict the genotypes of potential offspring and phenotypic proportions. A test cross is used to discover if an individual is homozygous dominant or heterozygous
monohybrid cross
a genetic cross performed to observe the inheritance of alleles and phenotypes for a single gene
Punnett square
a square diagram used to predict the genotypes of offspring
codominance
happens when two traits are independently and equally expressed
test cross
when an individual expressing the dominant phenotype but with an unknown genotype is crossed with a homozygous recessive individual. The results indicate whether the individual with the dominant phenotype is homozygous dominant or heterozygous