Probability of Inheritance Answers

Disasters

Increased food source

Competition

Toxins

Predator-prey relationships

New habitat

Read each example and identify it with one of the mechanisms that influence gene pools. A zebra migrates to join a different herd of zebras. Competition for sunlight leads to taller trees. The DNA of a snake changes to make its venom stronger. A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

Competition for sunlight leads to taller trees.

The DNA of a snake changes to make its venom stronger.

A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

Read each example and decide what the resulting effect on the gene pool of that population would be. A zebra migrates to join a different herd of zebras. Competition for sunlight leads to taller trees. The DNA of a snake changes to make its venom stronger. A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

Competition for sunlight leads to taller trees.

The DNA of a snake changes to make its venom stronger.

A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

Read each example and decide whether each would increase or decrease the genetic variation in the gene pool of that population. A zebra migrates to join a different herd of zebras. Competition for sunlight leads to taller trees. The DNA of a snake changes to make its venom stronger. A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation. is random is a mechanism for evolution is often related to disasters is also called “migration” deals with movement between populations