Genetics Vocab

Front

What is the genetic makeup of a trait?

Back

Genotype: The genetic constitution of an individual, represented by letters (e.g., Tt or TT).

Front

What is represented by the letters nn, ww, gg?

Back

Homozygous Recessive: An individual with two identical recessive alleles for a trait.

Front

What are examples of physical traits like blue eyes or curly hair called?

Back

Phenotype: The observable physical or biochemical characteristics of an organism.

Front

What term describes an allele's inability to mask the dominant form?

Back

Recessive: An allele that is masked by a dominant allele, represented by a lowercase letter.

Front

What is the grid that shows possible gene combinations from a genetic cross?

Back

Punnett Square: A diagram used to predict the outcome of a genetic cross.

Front

What is the term for an organism with two different alleles for a trait?

Back

Heterozygous: An individual with two different alleles for a specific gene.

Front

What do we call the physical location of a gene on a chromosome?

Back

Locus: The specific location of a gene on a chromosome.

Front

What is the term for the observable traits of an organism?

Back

Phenotype: The expression of the genotype in the organism's appearance.

Front

What is the term for a pair of chromosomes that are similar in shape, size, and genetic content?

Back

Homologous Chromosomes: Chromosome pairs, one from each parent, that are similar in shape and size.

Front

What is the term for the genetic makeup that includes both dominant and recessive alleles?

Back

Heterozygous: Having two different alleles for a particular gene.