Genetics Terms

Front

What does the notation 'tt' mean to geneticists?

Back

two recessive alleles

Front

Do sex cells contain the same number of chromosomes as body cells?

Back

No, sex cells only contain half as many chromosomes as body cells.

Front

What does the notation 'Tt' mean to geneticists?

Back

one dominant allele and one recessive allele

Front

What does the notation 'TT' mean to geneticists?

Back

two dominant alleles

Front

What is a heterozygous organism?

Back

An organism with two different alleles for a trait.

Front

What is a homozygous organism?

Back

An organism with two identical alleles for a trait.

Front

What are alleles?

Back

Different forms of a gene that determine specific traits.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by alleles.

Front

What is a phenotype?

Back

The observable characteristics or traits of an organism.

Front

What is the purpose of meiosis?

Back

To produce sex cells (gametes) with half the number of chromosomes.