DIHYBRID INHERITANCE Flashcards
what is it meant by the term, “linked genes?”
Linked genes are those that are very unlikely to cross over during meiosis
what is the effect of linked genes on the possible genotypes in the offspring?
Linked genes are unlikely to be separated during crossing over. This can
reduce the amount of genetic variation possible in a population.
how could a test cross be used to work out whether an organism is pure breeding for a trait?
A test cross involves breeding an organism with a homozygous recessive. If all offspring show the dominant trait, the organism is pure-breeding; if some show the recessive trait, it is not.
what is a test cross
A test cross is a breeding method used to find out if an organism with a dominant trait is pure-breeding or not. It involves crossing it with a homozygous recessive individual and observing the offspring.
