Genetics 11.1 Vocabulary

The instructions (letters, codes) for a specific trait that gets passed from parent to offspring

• trait

• gene

Tags

NGSS.MS-LS3-2

Different forms of a gene

• gene

• trait

• allele

A characteristic that an organism can pass on to its offspring (height, hair color)

• gene

• trait

• allele

• genotype

Tags

NGSS.MS-LS3-2

The form of a gene that, when present, covers up the appearance of the recessive allele. Always shows if you have it

Dominant - stronger 

• recessive allele

• dominant allele

• gene

• genotype

The form of a gene that is hidden when the dominant allele is present. Only shows when both alleles are recessive

• recessive allele

• dominant allele

• phenotype

• gene

The alleles (pair) of a gene an organism contains - The letters/codes

BB, Bb, bb

• phenotype

• dominant

• recessive

• genotype

The form of a trait that an organism displays - What you physically see (dimples, freckles)

• genotype

• gene

• allele

• phenotype

Tags

NGSS.MS-LS4-4

Two dominant alleles  for one trait that are the same - DD, KK, TT

Upper, upper

• homozygous recessive

• homozygous dominant

• heterozygous

Two recessive alleles for the one trait that are the same - rr, tt

Lower, lower

• homozygous recessive

• homozygous dominant

• heterozygous

Two alleles for one trait that are different - Tt, Ff, Aa

Upper, lower

• homozygous dominant

• heterozygous

• homozygous recessive