6.2 - Patterns Of Inheritance - transferred

Question 1

What is dihybrid inheritance?

Answer 1

Inheritance which involves two gene loci

Question 2

What does true breeding mean?

Answer 2

Means that the organism is homozygous for either the dominant or the recessive allele

Question 3

What is the usual ratio when two heterozygous parents are crossed in a dihybrid cross?

Answer 3

9:3:3:1 ratio

Question 4

What is linkage?

Answer 4

Two or more gene loci which are on the same chromosome

Question 5

Why are linkage genes inherited together?

Answer 5

Chromosomes are the unit of transmission during sexual reproduction, so linked genes aren’t free to carry out independent assortment because they are on the same chromosome

Question 6

Does Autosomal Linkage involve the Sex Chromosomes?

Answer 6

NO

Question 7

When are linked genes inherited as one unit?

Answer 7

When no crossing over of non-sister chromatids occurs during Prophase I

Question 8

What are Recombinant genes?

Answer 8

The product of crossing over of non-sister chromatids during sexual reproduction

Question 9

When are recombinant genes formed?

Answer 9

When crossing of non-sister chromatids occurs during Prophase I