Lesson 3, Chapter 4

Question 1

Patterns of inheritance

Answer 1

How traits are passed down from parents to children.

Question 2

Gregor Mendel

Answer 2

A Roman Catholic monk who is called The Father of Genetics.

Question 3

Homozygous

Answer 3

When the genes for a trait are the same in both chromosomes of a pair.

Question 4

Heterozygous

Answer 4

When the genes for a trait are different in both chromosomes of a pair.

Question 5

Factor

Answer 5

The word Gregor Mendel used for gene.

Question 6

Dominant/recessive trait

Answer 6

A trait where the dominant trait is always expressed if the dominant gene is present.

Question 7

Dominant gene

Answer 7

The trait it codes for is always expressed if it is present.

Question 8

Recessive gene

Answer 8

A gene that won’t be expressed if a dominant gene is present.

Question 9

Punnett square

Answer 9

A way to look at patterns of inheritance.

Incomplete dominance One trait isn’t dominant over another.

Question 10

Multiple gene inheritance

Answer 10

Traits that are controlled by more than one pair of genes.

Question 11

Sex-linked traits

Answer 11

Traits that are caused by a gene on an X or a Y chromosome on the 23rd pair.

Question 12

Hemophilia

Answer 12

A sex-linked trait that causes excessive bleeding.

Question 13

Red-green color deficiency

Answer 13

A sex-linked trait that makes it difficult to detect the difference between the colors red and green.

Question 14

Carrier

Answer 14

A person that carries a gene for a disorder but doesn’t have the disorder.