Genetics Review

2 identical alleles for the same trait. John has 2 genes for brown eyes so he is __

• dominant

• homozygous

• heterozygous

• allele

• recessive

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Different alleles for the same trait. Sue has one gene for brown eyes and one gene for blue eyes.

• dominant

• homozygous

• heterozygous

• allele

• recessive

A specific characteristic. Mendel looked at 7 different ___ in peas such as color and pod shape.

• dominant

• trait

• allele

• recessive

Tags

NGSS.MS-LS4-4

One of a number of different forms of a gene. The two ____ for pea color were yellow and green.

• dominant

• traits

• alleles

• recessive

Tags

NGSS.HS-LS3-1

The allele that is expressed most often.

• dominant

• trait

• allele

• recessive

The allele that is hidden unless both genes are present.

• dominant

• trait

• allele

• recessive

John has 2 genes for blue eyes. His genotype is

• homozygous

• heterozygous

Sally's genotype is heterozygous. Her genotype is written as..

• D D

• d d

• D d

A sequence of DNA that codes for a particular protein and thus determines a trait. There are hundreds of ______ on each chromosome.

• Mendel

• genes

• Darwin

• phenotype

• genotype

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The physical characteristics of an organism that is expressed. John has blue eyes and brown hair.

• Mendel

• genes

• Darwin

• phenotype

• genotype