Genetics Introduction

A version of a gene is called a(n)

• allele

• characteristic

• specific gene

• trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A trait that is expressed if one copy of the allele is present is a(n)

• characteristic

• dominant trait

• gene

• recessive trait

Tags

NGSS.HS-LS3-1

An organism’s genetic makeup; the pair of alleles for a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

Tags

NGSS.HS-LS3-1

An organism’s physical expression of a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is it called when both alleles in a genotype are the same?

• Dominance

• Heterozygous

• Homozygous

• Recessiveness

Tags

NGSS.HS-LS3-1

What is it called when the alleles in a genotype are different?

• Dominance

• Heterozygous

• Homozygous

• Recessiveness

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which pair of alleles is an example of homozygous recessive?

• bb

• BB

• Bb

Tags

NGSS.HS-LS3-1

Which pair of alleles is an example of homozygous dominant?

• tt

• TT

• Tt

Tags

7.11(A), 7.11(B), 7.11(C)

Which pair of alleles is an example of heterozygous alleles?

• ll

• LL

• Ll

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a Punnett square, a lower case letter stands for a ____________ allele.

• dominant

• recessive

• homozygous

• heterozygous