8.3 Study Guide

Question 1

Sex-Linked

Answer 1

Occur on the “X” chromosome-Women have 2 whereas Males only have 1 copy of the chromosome.

Question 2

What is a carrier?

Answer 2

Women can be carriers if one of their “X” chromosomes has the trait and the other doesn’t, Males can not be carriers.

Question 3

Do carriers show the trait?

Answer 3

Carriers do not show the trait, however they can still it on to their offspring.

Question 4

Autosomal

Answer 4

Occur in normal chromosomes not the only the code for sex.

Question 5

The difference between Sex-Linked and Autosomal

Answer 5

Males have 1 copy for sex-linked as opposed to the 2 copies for autosomal

Question 6

Autosomal Dominant

Answer 6

One or more dominant alleles cause the full-blown disease-Dominant alleles cause the disease.

Question 7

Autosomal Recessive

Answer 7

Two non-functioning alleles cause the genetic disorder. Dominant alleles do not cause the disease, being homozygous recessive causes the disease.

Question 8

What is a sex-influenced trait?

Answer 8

An Autosomal trait influenced by sex hormones.

Question 9

How do you rule the different modes of inheritance through a pedigree?

Answer 9

By looking at the parents and grandparents(incase the disease can skip generations)