Genetics Basics

Hh and hh will have ___ different genotypes.

• 3

• 4

• 2

• 6

Tags

NGSS.HS-LS3-2

2 different alleles

• homozygous dominant

• homozygous

• heterozygous

• purebred

Tags

NGSS.HS-LS3-2

Different forms of a gene

• alleles

• dominance

• recessive

Tags

NGSS.HS-LS3-2

A table used to figure out the theoretical results of a genetic cross is called

• Punnett square

• a bar graph

• a phenotype

• a genotype

The term used to describe a purebred organism when two identical alleles are present.

• heterozygous

• homozygous

• recessive

• dominant

Phenotype

• physical trait

• capital letter representing the dominant trait

• lowercase letter

• 2 alleles

In humans, the widow's peak allele is dominant and the no widow's peak allele is recessive. A person who is homozygous dominant would create gametes _________.

• W and w

• none of these answers

• W and W

• w and w

Tags

NGSS.HS-LS3-1

Tallness (T) is dominant to shortness (t) in pea plants. Which of the following represents a genotype of a pea plant that is heterozygous for tallness?

• Tt

• TT

• tt

• Ss

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A plant's alleles for white flowers are "pp". What can you say for certain about the plant's parents?

• both parents were pp

• both parents were Pp

• both parents were white

• both parents contributed a recessive allele

Tags

NGSS.HS-LS3-1

When might a dominant trait appear?

• When an organism has a dominant and a recessive allele

• In the absence of recessive alleles

• When an organism is heterozygous

• All of these