Test Ch. 5 Genetics 7th Grade

1. A Punnett square shows you all the ways in which ___________________ can combine.

• alleles

• eggs

• sperm

• colors

What type of inheritance determines eye color?

• incomplete dominance

• codominance

• multiple alleles

• polygenic inheritance

Which of the following is an example of multiple alleles?

• coat with red and white hairs

• blood type

• pink flower

• human height

In this cross between two pea plants, the offspring are

• 100% smooth.

• 50% smooth and 50% wrinkled.

• 75% wrinkled and 25% smooth.

• 75% smooth and 25% wrinkled.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A heterozygous orange-flowered plant is crossed with a homozygous purple-flowered plant. If orange is a dominant allele and purple is recessive, what color ratio will the flowers of the offspring plants have?

• 1 purple: 3 orange

• 4 purple: 0 orange

• 2 purple: 2 orange

• 0 purple: 4 orange

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A and B are the same kind of fish. A has a genotype for narrow fins (ww), and B has a genotype for wide fins (W-). Which of the following genotypes of parent fish will produce only offspring having wide fins?

• Ww and Ww

• WW and ww

• Ww and ww

• ww and ww

Different forms of a gene are called ___________________________.

• alleles

• jeans

• flowers

• homozygous

A(n) ____________________ is a visual tool for following a trait through generations of a family.

• Punnett Square

• Pedigree

• Mobius strip

• Applet

Identify three environmental factors that can affect an organism’s phenotype.

• soil acidity or alkalinity, lifestyle choices, temperature

• rain, power outage, temperature

• lifestyle choices, memory, brain cells

• parents, siblings, neighbors

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

Organisms with two different alleles for a trait are called _____________.

• heterozygous

• homozygous

• heritage

• complacent