Biology 2017 Genetics test review part 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What did Mendel conclude about traits? | They are inherited through the passing of factors from parents to offspring.
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| The farther apart two genes are located on a chromosome: | The less likely they are to be inherited together.
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| In the P generation, a tall plant was crossed with a short plant. No F1 plants were short. Short plants reappeared in the F2 generation because: | The allele for shortness and the allele for tallness segregated when the F1 plants produced gametes.
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| Probability can be used to: | Predict the traits of the offspring produced by genetic crosses.
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| Principle of independent assortment | During gamete formation, genes for different traits separated without influencing each other's inheritance.
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| Intermediate inheritance | Cross of a black chicken and a white chicken produces all blue offspring
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| Polygenic inheritance | variation in human skin color
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| Mendel crossed a true-breeding tall plant with a true-breeding short plant. The F1 plants inherited: | an allele for tallness from the tall parent and an allele for shortness from the short parent
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| In the P generation, a true-breeding tall plant (dominant) was crossed with a true-breeding short plant. If alleles did not segregate during gamete formation: | All the F2 plants would be tall.
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| Hybrids | Offspring that result from crosses between true-breeding parents with different traits
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| Mendel crossed true-breeding purple-flowered plants with true-breeding white-flowered plants. All the offspring were purple because: | the allele for purple-flowered plants is dominant.
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| Homozygous | Organisms that have two identical alleles for a trait.
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| A Punnett square shows: | The possible results of a genetic cross, but not the actual results.
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| The sex-linked allele for colorblindness is located on: | the X chromosome
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| If a woman who is a carrier of a sex-linked trait married a man with the trait, the chance that the child would have the trait would be: | 50 %
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| A carrier of a recessive disorder | has one copy of the allele and does not exhibit symptoms.
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