Genetics Vocabulary

genetics is the study of __________

• heredity

• genetics

• parents

a gene is a _________ of DNA

• DNA

• segment

• RNA

• nucleotide

A ______________ is a physical characteristic

• DNA

• RNA

• gene

• trait

TT; big letters are ___________

• recessive

• dominant

• nothing

tt, small letters are ______

• DNA

• dominant

• recessive

Tt, Hh, Rr

• homozygous

• heterozygous

• recessive

• phenotypes

TT, RR, WW, SS

• homozygous recessive

• homozygous dominant

• heterozygous

• recessive

rr, tt, hh, gg

• homozygous dominant

• heterozygous

• homozygous recessive

• strong

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow