Types of Natural Selection

Which type of natural selection occurs when individuals with alleles for an extreme trait are more likely to survive and reproduce?

• stabilizing selection

• directional selection

• disruptive selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

Type of selective pressure that favors the extreme phenotypes, dividing the population into 2 distinct groups

• directional selection

• stabilizing selection

• disruptive selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

Individuals with intermediate traits are more likely to survive and reproduce

• stabilizing selection

• directional selection

• disruptive selection

Tags

NGSS.HS-LS4-4

Tall kelp (seaweed) have a distinct advantage over shorter kelp in receiving needed sunlight in their ocean environment.

• directional selection

• disruptive selection

• stabilizing selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

Aspen trees that are over 25 meters tall tend to blow over in high winds; aspen that are under 15 meters tall don't get enough sun. What type of selection?

• directional selection

• stabilizing selection

• disruptive selection

Tags

NGSS.HS-LS4-4

Snails with a forward spiral and snails with a backward spiral have an advantage in their environment.

• directional selection

• stabilizing selection

• disruptive selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

On average, human newborns weigh 7.2 pounds.

• directional selection

• stabilizing selection

• disruptive selection

Tags

NGSS.HS-LS4-4

Fish that produce 40,000+ eggs have greater fitness than fish that produce less than this number

• directional selection

• stabilizing selection

• disruptive selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

Labradoodles and cockapoos are different varieties of domestic dogs that can be purchased from dog breeders.

• directional selection

• stabilizing selection

• disruptive selection

• artificial selection

Bacteria that are too large cannot obtain nutrients efficiently and bacteria that are too small cannot compete for those nutrients successfully

• directional selection

• stabilizing selection

• disruptive selection

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2