#2 Biology: Heredity & Genetics

Question 1

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 2

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

Accepted Answer

TRUE

Question 3

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

Accepted Answer

genes

Question 4

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 5

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

Accepted Answer

peas

Question 6

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

Accepted Answer

characteristics

Question 7

From where do humans inherit their genes?

Accepted Answer

both parents

Question 8

How many chromosome pairs do humans have?

Accepted Answer

23

Question 9

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

Accepted Answer

heredity

Question 10

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

Accepted Answer

recessive

Question 11

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

Accepted Answer

1 hour

Question 12

What is the probability that a child will be female?

Accepted Answer

50 %

Question 13

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

Accepted Answer

Gregor Mendel

Question 14

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

Accepted Answer

trait

Question 15

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

Accepted Answer

TRUE

Questions 15