phenotypic ratio 20.4 Flashcards

1
Q

linked genes are inherited as a …. unit
single
double

A

single

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2
Q

independent assortment occurs after…

A

the genes are separated bye chiasmata

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3
Q

why the expected ratio will not be produced in offspring?

A

linked genes can’t undergo normal random shuffling

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4
Q

what happens if separation occurs between linked genes?

A

can lead to recombinant offspring

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5
Q

what is recombinant offspring?

A

they have different combination of alleles than either parent

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6
Q

what is autosomal linkage?

A

the more offspring will have the same genotype and phenotype as their parents unless crossing over has occured which leads to chiamsta

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7
Q

a measure of the number of crossing over that Helen’s at meiosis is called…

A

recombination frequency

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8
Q

recombination frequency formula

A

number of recombination offspring/tota number of offspring

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9
Q

if >50%

if <50%

A

.there is no linkage and the genes are on separate chromosomes
.there is gene linkage and the random of independent assortment has been hindered.

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