0430 - Population Genetics - OP Flashcards Preview

B1 Foundation Block > 0430 - Population Genetics - OP > Flashcards

Flashcards in 0430 - Population Genetics - OP Deck (14):
1

What is a base pair

Building blocks of DNA. Nucleotide

2

What is a gene

The molecular unit of heredity of a living being

3

What is an Allele

One on a number of alternative forms of the same gene

4

What is a genetic locus

The specific location of a gene or a DNA sequence on a chromosome

5

What is a genotype

The genetic makeup of a cell, organism or individual

6

What is a phenotype

The organisms observable characteristics of traits

7

What is population genetics

The study of how a population changes over time leading to a species evolving or mutating

8

What are the factors the affect allele frequency

• Natural selection• Sexual selection• Mutations• Genetic drift• Gene flow

9

What is the hardy-Weinberg equation

10

Explain the fixation index

The fixation index is a measure of the difference in allele frequency between two populations. 

11

What are the assumptions of the hardy-weinberg equation 

12

What is negative selection

13

What is a selective advantage

14

Explain genetic drift and the founder effect

Genetic drift refers to the change in the frequency of a gene variant due to random sampling. The founder effect refers to the loss of genetic information that occurs when a new population is started by a small number of individuals. 

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