Allele Frequency Quiz review #1 (1st genetics quiz)

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

The parents in this cross have both have a ________ genotype.

• heterozygous

• homozygous

• identical

• hybrid

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What is the genotype of the offspring in box “B”?

• heterozygous

• homozygous

• identical

• pure bred

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What is the phenotype of the offspring in box “A”?

• black

• white

• black and white

• neither black or white

Tags

NGSS.HS-LS3-1

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What is the genotype of the offspring in box “C”?

• 1,1

• 2,2

• 1,2

• neither black or white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What percentage of the offspring will be white?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What percentage of the offspring will be black?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What percentage of the offspring will be black?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In rats, black fur (1) is dominant to white fur (2). Consider the following cross between two rats. 1,1 x 2,2

What percentage of the offspring will be white?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

An allele that is always expressed whenever it is present is called ________.

• recessive

• dominant

• phenotype

• genotype

• alleles

The ____________ of an organism is the physical appearance or variation of a trait that shows in an individual.

• recessive

• dominant

• phenotype

• genotype

• alleles