Genes and Variation

True or False. Darwin understood that traits were passed through DNA

• True

• False

Tags

NGSS.HS-LS3-1

What word fits in the blank: Today, _____, molecular biology and evolutionary theory work together to explain how inheritable variation appears and how natural selection operate on that variation.

• genetics

• chemistry

• cells

• phenotypes

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

The combined genetic information of all the members of a particular population is called a ___.

• phenotype

• single-gene trait

• gene pool

• heterozygous trait

A gene pool typically contains two or more ___.

• alleles

• people

• cells

• chromosomes

Relative Frequency describes the number of times an allele occurs in a gene pool compared with the number of times other alleles occur.

• This definition is correct

• This definition is not correct

Tags

NGSS.HS-LS4-3

The two main sources of genetic variation is ___ and ___.

• mutations and gene shuffling

• mutations and people

• gene shuffling and chromosomes

• phenotypes and genotypes

Tags

NGSS.HS-LS3-2

True or False. Mutations are always planned.

• True

• False

Tags

NGSS.HS-LS3-2

True or False. Mutations can occur due to radiation and chemicals in the environment.

• True

• False

Tags

NGSS.HS-LS3-2

True or False. Mutations always affect an organism's phenotype.

• True

• False

True or False. Mutations can affect an organism's fitness.

• True

• False

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4