What Do You Know So Far

A segment of DNA that codes for a trait

• gene

• allele

• chromosome

• chromatid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

A version or variation of a gene

• trait

• gene

• allele

• DNA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The observable expression of a trait

• phenotype

• genotype

• chromosome

• allele

Tags

NGSS.HS-LS3-1

The alleles that an organism has

• genotype

• phenotype

• chromosome

• recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

When an organism has two different alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

When an organism has two of the same alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

Tags

NGSS.HS-LS3-2

This type of allele is expressed whether there are one or two copies present.

• dominant

• recessive

• homozygous

• heterozygous

Tags

NGSS.HS-LS3-1

The genotype gg is best described as

• heterozygous

• homozygous

The genotype Aa is best described as

• heterozygous

• homozygous

In pea plants, purple flowers (P) are dominant to white flowers (p). The phenotype of a Pp plant would be

• purple

• white

• homozygous

• heterozygous

Tags

NGSS.HS-LS3-1