Review of Allele Frequencies & DNA profiling

Front

What is the total amount of DNA in a cell, contained in the nucleus and mitochondria?

Back

Genome.

Front

If the frequency of a recessive allele is 0.2, what is the frequency of homozygous recessive individuals?

Back

0.04.

Front

What method is used to separate molecules, such as DNA, based on their size?

Back

Electrophoresis.

Front

If the allele frequency of p is 0.20, what is the frequency of the heterozygous genotype?

Back

0.32.

Front

In a population of 150 individuals, if the allele frequency for the dominant allele (B) is 0.3 and for the recessive allele (b) is 0.7, what is the frequency of the genotype (bb) using the Hardy-Weinberg equation?

Back

0.49.

Front

What is an allele?

Back

An allele is a variant form of a gene.

Front

Define allele frequency.

Back

Allele frequency is the proportion of a specific allele among all allele copies in a population.

Front

What is the Hardy-Weinberg principle?

Back

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

Front

What is the formula for calculating the frequency of homozygous recessive individuals in a population?

Back

q^2, where q is the frequency of the recessive allele.

Front

What does PCR stand for and what is its purpose?

Back

PCR stands for Polymerase Chain Reaction, and it is used to amplify DNA.