Heredity & Genetics

Question 1

When a trait seems to be the strongest & shows up in most of the offspring, it is known as:

Accepted Answer

a dominant trait

Question 2

What is the probability that a child will be female?

Accepted Answer

50 %

Question 3

If a person's total DNA were laid in a straight line, how far would it stretch?

Accepted Answer

1.5 times the diameter of the solar system

Question 4

T/F: Scientists believe blue-eyed people came from a single ancestor whose gene mutated.

Accepted Answer

TRUE

Question 5

About how long does it take for one of your cells to completely copy its DNA?

Accepted Answer

1 hour

Question 6

Segments of DNA that give instructions for making certain characteristics are known as:

Accepted Answer

genes

Question 7

When traits seem to fade away, they are known as __________ traits.

Accepted Answer

recessive

Question 8

What term is used to distinguish the different forms of characteristics?

Accepted Answer

trait

Question 9

Which term describes a feature that is found in different forms within a population?

Accepted Answer

characteristics

Question 10

What monk made the first major contribution to the study of heredity?

Accepted Answer

Gregor Mendel

Question 11

While studying heredity, Mendel looked at 7 different features of which kind of plant?

Accepted Answer

peas

Question 12

What term describes the passing of genetic material from parents to offspring?

Accepted Answer

heredity

Question 13

How many chromosome pairs do humans have?

Accepted Answer

23

Question 14

From where do humans inherit their genes?

Accepted Answer

both parents

Question 15

T/F: Alleles are the different versions of genes responsible for hereditary variations.

Accepted Answer

TRUE

Questions 15