Topic 19

Question 1

dosis effect

Answer 1

may occur in Z-linked inheritance

- lead to different characteristics in the two sexes

Question 2

different colors in homo/heterozygote

Answer 2

due to dose effect in genteically homozygotus lines from hatching to adult age

Question 3

Autosexing character:

Answer 3

homo- and heterogametic sexes are different in colour due to dosage effect in genetically pure (homozygotus) from hatching to adult age

Question 4

Where may the dose effect occur?

Answer 4

In Z-linked inheritance

Question 5

What are different characteristics in the two sexes at birth/hatching due to?

Answer 5

Dose effect

Question 6

Auto sexing genes:

Answer 6

Pigmentation inhibitor genes, Barring in chickens, Grey feathers of geese

Question 7

Pigmentation inhibitor genes

Answer 7

in Texan and King Pigeons; Homogametic males are lighter

Question 8

Barring in chickens

Answer 8

a type of coloring

BB, B-; Homogametic males are lighter

Question 9

Grey feathers of geese

Answer 9

sd, sdsd; Homogametic males are lighter/darker???; “white” pilgrim goose

Question 10

What must it be distinguished from?

Answer 10

Sexual dimorphism = obvious phenotypic differences between sexes