Genetics Review

Prokaryotic cells do not have

• A nucleus

• DNA

• A cell membrane

• Genetic material

One advantage of asexual reproduction is that

• It occurs slowly

• It requires at least 2 organisms

• Organisms can easily find a mate

• It is fast

Tags

NGSS.MS-LS3-2

A complete Punnett square shows

• Only the dominant alleles in parents and offspring

• Genotypes and phenotypes of parents and offspring

• The genotypes of the parents and offspring

• The actual outcome of offspring

A dog with black fur (BB) is crossed with a dog with brown fur (bb).  What is the probability that the offspring will be black?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

An organism with the genotype Tt is crossed with an organism with the same genotype.  What is the percentage of offspring displaying the recessive allele?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

Dwarf pea plants (tt) are crossed with pea plants of regular height (TT).  Which of these describes the first generation plants?

• All are regular height

• Half are regular height

• All are dwarf height

• 1/4 are dwarf height

Tags

NGSS.HS-LS3-1

Suppose that the allele for red flower color is dominant.  A plant with red flowers (homozygous) is crossed with a plant with white flowers.  What is one possible phenotype and genotype of the offspring?

• White flowers, Rr

• Red flowers, rr

• Pink flowers, rr

• Red flowers, Rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

One parent has the alleles Rr for a gene.  The other parent has the same alleles for that gene.  What is the probability of the offspring being Rr?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-3

Your genes are inherited from your

• Alleles

• Gametes

• Parents

• Offspring

Tags

NGSS.HS-LS3-1

An animal has an allele for white fur, but its fur is brown.  The allele for white fur is

• Not genetic

• Recessive

• Dominant

• Incomplete