DNA and Chromosomes

Front

Chromosome

Back

A packet of DNA found in the nucleus of an atom; they come in homologous pairs

Front

One of two or more versions of a gene

Back

Allele

Front

Chromosomes with the same allele for the same trait

Back

homozygous

Front

Chromosomes with different alleles for the same trait

Back

Heterozyous

Front

A trait or allele that it expressed even when only one copy is present

Back

Dominant

Front

A trait or allele that is only expressed if an organism inherits two copies of that allele

Back

Recessive

Front

The actual combination of genes an organism possesses.

Back

Genotype

Front

The traits an organism expresses.

Back

Phenotype

Front

A tool used to predict and compare the results of a genetic cross

Back

Punnett Square

Front

Homozygous dominant

Back

AA