Species & Reproduction Review!

How does the number of chromosomes in gametes (sex cells) compare with the number of chromosomes in all other cells?

• Gametes have twice as many chromosomes

• Gametes have 1/4 the number of chromosomes

• Gametes have 1/2 the number of chromosomes

• Gametes have twice as many chromosomes

One cat has a heterozygous genotype, black fur (Bb), and its mate has a homozygous genotype grey fur (bb). Use a Punnett square to determine the probability of one of their offspring having grey fur.

• 100%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Which of the following results in creating genetic recombination (creates variation in the gametes from meiosis)?

• alleles

• crossing over

• genes

• hybrid crosses

What is formed as a result of mitosis?

• four genetically different cells

• four genetically identical cells

• two genetically different cells

• two genetically identical cells

What is the probability that a cross between a heterozygous yellow pea plant and a green pea plant will produce green offspring?

• 1:1

• 1:2

• 1:8

• 1:4

Which summarizes the genetic research completed by the Austrian monk Gregor Mendel?

• After years of research, Mendel identified the genes for flower colors.

• Mendel bred various dog breeds to discover the science of genetics.

• Mendel hypothesized that the offspring of pea plant traits are inherited.

• Using Punnett squares, Mendel developed the principles of genetics.

Diploid cells (2n) contain twice the number of chromosomes as do _________.

• synapse

• zygote

• gametes

• protein molecule

Which is a tool that is used to predict genetic crosses?

• a slide rule

• a tally sheet

• a Punnett square

• a Venn diagram

The observable expression of an allele pair is called the _________.

• recessive gene

• genotype

• phenotype

• monohybrid cross

Tags

NGSS.HS-LS3-1

Meiosis produces _______ in gametes.

• enzymes

• zygotes

• genetic variation

• forty-six chromosomes