Genetics%20Review%20Game

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Genetics Review Game

• Mitosis, Meiosis, Genetics Problems and
  Chi-Square!

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Cell Cycle
Linked Genes Chi-Square
Beyond Mendel
Mendelian Problems
Mitosis Vs. Meiosis
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For a newly evolving organism, what would be the
advantage of using sexual reproduction rather
than asexual reproduction?
A
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Sexual reproduction would allow for new genetic
combinations of offspring. This gives the
organism a chance to adapt to its environment.
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How do the daughter cells at the end of mitosis
and cytokinesis compare with their parent cell
when it was in G1 of the cell cycle? a. The
daughter cells have half the amount of cytoplasm
and half the amount of DNA. b. The daughter
cells have half the number of chromosomes and
half the amount of DNA. c. The daughter cells
have the same number of chromosomes and half the
amount of DNA. d. The daughter cells have the
same number of chromosomes and the same amount of
DNA. e. The daughter cells have the same number
of chromosomes and twice the amount of DNA. .
A
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1. The daughter cells have the same number of
   chromosomes and the same amount of DNA

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Besides the ability of some cancer cells to
reproduce more rapidly, what else could logically
result in a tumor?
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A malfunction of apoptosis
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If cyclin was always available in the cell at
high concentrations, what effect would this have
on the cell cycle?
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• Cells would progress through mitosis even when
  they were not ready

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Which protein is synthesized at a constant rate
during the cell cycle that associates with a
kinase to form a catalytically active complex?
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cyclin
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If the DNA content of a diploid cell in the G1
phase of the cell cycle is x, then the DNA
content of the same cell at the start of meiosis
would be
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2x
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• Which of the following is true of a species that
  has a chromosome number of 2n 8?
• a. The species is diploid with 16 chromosomes per
  cell.
• b. The species has 8 sets of chromosomes per
  cell.
• c. Each cell has 4 homologous pairs.
• d. During the S phase of the cell cycle there
  will be 16 separate chromosomes.
• A gamete from this species has 2 chromosomes.

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c. Each cell has 4 homologous pairs
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Homologous Chromosomes are separated from each
other. a. The statement is true for mitosis
only. b. The statement is true for meiosis I
only. c. The statement is true for meiosis II
only. d. The statement is true for mitosis and
meiosis I. e. The statement is true for mitosis
and meiosis II.
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b. The statement is true for meiosis I only
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At which stage of meiosis (I or II) does the
cell go from a diploid to a haploid cell?
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Meiosis I
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At which stages of mitosis and meiosis are sister
chromatids are separated from each other?
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Mitosis and Meiosis II
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Two plants are crossed, resulting in offspring
with a 31 ratio for a particular trait. This
suggests a. that the parents were true-breeding
for contrasting traits. b. incomplete
dominance. c. that a blending of traits has
occurred. d. that the parents were both
heterozygous. e. that each offspring has the
same alleles.
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d. that the parents were both heterozygous
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Two plants are crossed, resulting in offspring
with a 11 ratio for a particular trait. This
suggests a. that the parents were true-breeding
for contrasting traits. b. incomplete
dominance. c. that a blending of traits has
occurred. d. That one parent was heterozygous
and one parent was homozygous recessive. e. that
each offspring has the same alleles.
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d. That one parent was heterozygous and one
parent was homozygous recessive
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Two plants are crossed, resulting in offspring
that all showed a single trait a. that the
parents were true-breeding for contrasting
traits. b. incomplete dominance. c. that a
blending of traits has occurred. d. That one
parent was heterozygous and one parent was
homozygous recessive. e. that each offspring has
the same alleles.
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a. that the parents were true-breeding for
contrasting traits.
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A sexually reproducing animal has two unlinked
genes, one for head shape (H) and one for tail
length (T). Its genotype is HhTt. Which of the
following genotypes is possible in a gamete from
this organism? a. HT b. Hh c. HhTt d. T e. tt
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a. HT
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Two true-breeding stocks of pea plants are
crossed. One parent has red, axial flowers and
the other has white, terminal flowers all
individuals have red, axial flowers. The genes
for flower color and location assort
independently. If 1,000 offspring resulted from
the cross, approximately how many of them would
you expect to have red, terminal flowers?
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3/16 x 1000 187.5
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A 121 phenotypic ratio in the generation of a
monohybrid cross is a sign of a. complete
dominance. b. multiple alleles. c. incomplete
dominance. d. polygenic inheritance. e. pleiotro
py.
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c. incomplete dominance.
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What is Epistasis?
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When 1 gene locus alters the expression of a
second locus.
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What is polygenic Inheritance?
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Several genes govern the inheritance of the trait.
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If youre type A blood, what combinations of
alleles can you have? Type AB blood?
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Type A IA IA or IAi Type AB IAIB
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Males are more often affected by sex-linked
traits than females because
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Males only have 1 copy of the X chromosome
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Gene A-B have a recombination frequency of
25 Gene A-C have a recombination frequency of
35 Which gene is further from gene A on the
chromosome, gene B or Gene C?
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Gene C is further from gene A
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What would you expect to see in the phenotypic
ratios of offspring between a parent AaBb x aabb
If gene A and gene B are on the same chromosome?
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The parental phenotypes would show a higher
proportion than the recombinant phenotypes
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Can you tell if genes are linked if they have
over a 50 recombination frequency?
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No, if they had a 50 recombination frequency,
the phenotypic ratios of the offspring would be
the same as if the genes were on separate
chromosomes
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If the Chi-Square value you calculate is LOWER
than the critical value at 0.05, what does this
tell you?
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Accept the null hypothesis. Any differences
between your observed value and your expected
value is likely due to random chance
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If the Chi-Square value you calculate is HIGHER
than the critical value at 0.05, what does this
tell you?
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Reject the null hypothesis. Any differences
between your observed value and your expected
value is likely NOT due to random chance