Natural and Artificial Selection Exam Review

In a monohybrid cross between two heterozygous parents (Tt × Tt), what is the expected genotypic ratio?

• 1:2:1

• 3:1

• 2:2

• 4:0

Tags

NGSS.HS-LS3-3

In this cross (Tt × Tt), what is the expected phenotypic ratio if T is dominant?

• 1 tall : 3 short

• 3 tall : 1 short

• 2 tall : 2 short

• 4 tall : 0 short

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Spores may be dispersed or transported by

• wind

• water

• other organisms

• all of these

Heredity means

• Passing on genetic information from one generation to the next

• Storing information to use in a time of need

• Willing all of your valuables to your relatives

• Sharing survival knowledge with your offspring

Tags

NGSS.MS-LS3-2

If “B” stands for brown eyes (dominant) and “b” stands for blue eyes (recessive), what are the possible genotypes of the offspring from Bb × bb?

• BB and Bb

• Bb and bb

• BB and bb

• Only bb

The SCIENTIFIC definition of behavior is:

• The ability of an organism to produce offspring that survive and reproduce themselves.

• The range of actions, reactions, and activities of individuals, organisms, or systems in a given environment

• The way in which one acts or conducts oneself, especially toward others.

• How you conduct yourself

In the cross Bb × bb, what percentage of offspring are expected to have brown eyes?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.MS-LS3-2

Favorable traits become more ______ over a period of time.

• common

• uncommon

• difficult to maintain

• extinct

Tags

NGSS.MS-LS4-4

What do the letters inside a Punnett square represent?

• The possible traits of parents

• The possible genotypes of offspring

• The gametes of offspring

• The phenotypes of parents

Both plants and animals have inherited traits from their parents.

• True

• False

• Not enough information to answer

• sometimes

Tags

NGSS.MS-LS3-2