Genetic Variation

Gene Mutations

100

What is a gene mutation?

A gene mutation is a permanent change in the DNA sequence that makes up a gene.

200

Name two ways genetic mutations occur.

They are inherited by a parent & are possibly acquired during a person's lifetime.

300

Name a reason how a genetic mutation can affect your health.

gene mutations prevent one or more of these proteins from working properly, it can disrupt normal development of the body or cause a medical condition.

400

Name three different types of genetic mutations

Missense mutation, nonsense mutation, insertion mutation, deletion mutation, duplication mutation, frameshift mutation.

500

Explain one kind of gene mutation.

We will determine whether it's right or wrong.

H-W Principle

100

What are the full names of the scientists?

Godfrey Hardy & Wilhelm Weinberg

200

How did G. Hardy & W. Weinberg demonstrate the Hardy-Weinberg Principle.

Mathematically.

300

What does the Hardy-Weinberg principle state?

The Hardy–Weinberg principle states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

400

Name two of the Hardy Weinberg factors that stop evolution

Mutation is not occurring, natural selection is not occurring, population is large, all members of the population breed, all mating is totally random, everyone produces the same number of offspring & there is no migration (in or out of the population)

500

What is the hardy weinberg equation?

p^2+2pq+q^2= 100% (1)

Gene Flow

100

What is gene flow?

Any movement of genes from one population to another.

200

Give an example of gene flow from the presentation.

Brown beetle and green beetle, green bird and pink bird, flowers, and blue eyed people and brown eyed people.

300

Example of lower rate of gene flow.

Wind pollinated flowers

400

Name two different types of barriers

Physical & natural.

500

What kind of barrier is the great wall of china and why?

Physical because it separates two different kinds of flowers.

Genetic Drift

100

What is a genetic drift?

random changes in the frequency of alleles in a gene pool, usually of small populations.

200

How is genetic drift, natural selection, mutation and migration related?

Basic mechanisms of evolution.

300

How can fixation occur in just a few generations?

When there is a small population.

400

What does it mean when fluctuation is analogous to genetic drift?

A change in the population's allele frequency resulting from a random variation in the distribution of alleles from one generation to the next.

500

Briefly explain the marble example.

(We'll decide whether it's right or wrong)