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ASU BIO 182 EXAM 1 AND PRACTICE EXAM
NEWEST 2024-2025 ACTUAL EXAM COMPLETE
200 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
ASU BIO 182 EXAM 1
What did Hugo de Vries (1848-1935) contribute to science in the context of Darwinian Evolution? - CORRECT ANSWER - Hugo de Vries brought up the idea of mutation. New genes could pop-up from mutations to provide the necessary genetic variation for Natural Selection.
What would blending inheritance lead to? - CORRECT ANSWER-Blending Inheritance would lead to a decrease in genetic diversity/variation. (Not a realistic theory for what is really occurring)
True or False #10: According to the theory of blending
inheritance, a mating between a plant that produces round peas and a plant that produces wrinkled peas would result in offspring that produces slightly wrinkled peas. - CORRECT ANSWER - True
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What is genetic variation? - CORRECT ANSWER -Genetic Variation depends on particles that segregate but do not blend during reproduction. (Something is passing on that can come back; some kind of trait. Recessive Gene)
What model did Gregor Johann Mendel (1822-1884) to visualize and represent genotypes and phenotypes? - CORRECT ANSWER-Punnet Square! (Capital Letter reps Dominant Allele; Lower Case Letter reps Recessive Allele)
True or False #11: If some plants with round peas were
heterozygotes (Aa), then these plants should produce offspring with wrinkled peas when mated to plants with wrinkled peas (aa). - CORRECT ANSWER -True! (Aa X aa = 2 Aa and 2 aa)
Why do experiments?:1. Why Replicate observations?2. Why
Control conditions?3. Why Randomize Subjects? - CORRECT ANSWER-1. Increases reliability of patterns2. Isolates effects of certain factors3. Decreases bias from uncontrolled factors
What is incomplete dominance? - CORRECT ANSWER - Situation in which one allele is not completely dominant over another allele
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What is codiminance? - CORRECT ANSWER -situation in which both alleles of a gene contribute to the phenotype of the organism (spotted cows e.g.)
What is probability? - CORRECT ANSWER -likelihood that a particular event will occur
Will you ever get exactly 75% Dominant phenotype (genotype - AA or Aa) and 25% recessive phenotype (genotype - aa) with a two heterozygote parents (Aa)? - CORRECT ANSWER -No, because there will always be discrepancy/imperfection is due to random events.
True or False #12: If two heterozygotes mate to produce two
offspring, the chance that both offspring are homozygous recessive equals 50%. - CORRECT ANSWER -False!
What is a P-Value? - CORRECT ANSWER -The probability of the observed deviation from the what we expect or a greater deviation, when the model is correct. (Due to sampling error not the model, because the model is correct)
What does a statistical test do? - CORRECT ANSWER -A statistical test estimates the probability of obtaining a certain deviation from predictions based on sampling errors. 3 / 4
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- Why is the yellow pea a dominant allele?
- Why is the green pea recessive? - CORRECT ANSWER -1.
- The green peas are recessive alleles, because they have a
The yellow pea contains Pheide a Oxygenase (PAO), an enzyme that breaks down green color chlorophyll. And it allows for the production of functional pheide a oxygenase.
nonfunctional pheide a oxygenase that does not break down the green color chlorophyll.
True or False # 13: If a heterozygote (Aa) makes enough
enzymes to catalyze as many reactions as a homozygotes (AA) can, these genotypes would have the same phenotypes. - CORRECT ANSWER -True! In this situation half as much enzymes can still do it, but may take more time. (Enzymes bind to substrate but never are used up)
How does dominance work? - CORRECT ANSWER - Dominance results from biochemical process involving enzymes associated with the gene.
True or False #14: If a heterozygote (Aa) makes some enzymes,
but not enough to catalyze as many reactions as a homozygote (AA) can, all genotypes would have the same phenotype (AA=Aa=aa). - CORRECT ANSWER -false
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