Genetics & Biotechnology Test Review

Front

What is incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a phenotype that is a blending of the two traits.

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What is the phenotype ratio for red hair to non-red hair if R= not red and r= red?

Back

1:3

Front

What is probability in genetics?

Back

Probability measures the likelihood of a particular genetic outcome occurring.

Front

What are external factors that can regulate gene expression?

Back

External factors include temperature, light, and chemicals that can influence how genes are expressed.

Front

What was the goal of the Human Genome Project?

Back

To create maps showing where genes are located on human chromosomes.

Front

Define phenotype.

Back

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

Define genotype.

Back

The genetic constitution of an individual, specifically the alleles present at a given locus.

Front

What is a gene?

Back

A segment of DNA that contains the instructions for building a specific protein or set of proteins.

Front

What are alleles?

Back

Different versions of a gene that can exist at a specific locus on a chromosome.