phenotypic ratio 20.4 Flashcards
linked genes are inherited as a …. unit
single
double
single
independent assortment occurs after…
the genes are separated bye chiasmata
why the expected ratio will not be produced in offspring?
linked genes can’t undergo normal random shuffling
what happens if separation occurs between linked genes?
can lead to recombinant offspring
what is recombinant offspring?
they have different combination of alleles than either parent
what is autosomal linkage?
the more offspring will have the same genotype and phenotype as their parents unless crossing over has occured which leads to chiamsta
a measure of the number of crossing over that Helen’s at meiosis is called…
recombination frequency
recombination frequency formula
number of recombination offspring/tota number of offspring
if >50%
if <50%
.there is no linkage and the genes are on separate chromosomes
.there is gene linkage and the random of independent assortment has been hindered.