Biology 17.2

Question 1

Linked Genes

Answer 1

Genes that are found on the same chromosome

Question 2

Chromosome mapping

Answer 2

The process of determining the relative positions of genes on a chromosome

Question 3

The further ____ two genes are, the more ____ they would ___

Answer 3

apart
likely
recombine

Question 4

One Map unit

Answer 4

The distance between points on a chromosome where a crossover is likely to occur in 1 percent of all meiotic events.

Question 5

Map distance

Answer 5

Distance between genes on a single chromosome

Question 6

Recombinant types

Answer 6

Without crossover in prophase meiosis 1 these would not exist
Different combinations of alleles than the chromosomes of the P generation.

Question 7

Sex linked traits

Answer 7

Traits that are controlled by genes on either the X or Y chromosomes.

Question 8

Y linked traits (3)

Answer 8

• Passed only for males to their sons
• A female cannot be a carrier of a Y linked trait
• Hairy ears

Question 9

Multiple alleles

Answer 9

A gene with more than two alleles

Blood type

Question 10

Continuos Traits

Answer 10

Traits for which the phenotypes vary gradually from one extreme to another,
Ex: Height in human, ear length in corn, weight of beans, Skin, eye colour
- Cannot be placed in discrete categories such as colour blind or not colour blind
- vary over a continuum
- Usually controlled by more than one gene

Question 11

Polygenic traits

Answer 11

Traits that are controlled by many genes