Bio L112 Exam 2 with precise
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detailed solutions 5
If purple is dominant in pea plants, a cross between P generation purple (true
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breeding - always produce the same trait) and white plants (true breeding)
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will result in - Correct answer ✔all purple flowers in the F1 generation
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The advantage of sexual reproduction over asexual reproduction is - Correct
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answer ✔there is a mixing of genetic information into a new combination in
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the next generation
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Senescing cells are kept from entering _____ because they cannot ______. -
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Correct answer ✔S phase; initiate DNA replication
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The primary difference between mitosis and meiosis in animals is - Correct
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answer ✔the generation of haploid cells from diploid cells;
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the number of daughter cells that result (2 or 4);
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the number of times chromosomes align at the metaphase plate &;
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the purpose of generating reproductive cells as opposed to generating somatic
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cells
Embryonic development begins with a single egg fertilized by a single sperm
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forming a zygote. The zygote then undergoes mitosis; how many cells would
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be present at the conclusion of 4 mitotic divisions? - Correct answer ✔16
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, Genetic recombination in somatic cells is used to - Correct answer ✔repair
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damaged or broken chromosomes 5 5 5
During a certain stage of the cell cycle, chromatin is organized like "beads on
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a string." At this level of DNA compaction the "beads" are ____ and the
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"string" is - Correct answer ✔nucleosomes; DNA
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A woman with normal blood clotting mates with a man who has hemophilia.
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Their first child is boy who has hemophilia. Tests show that the father and
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son both have the same form of hemophilia, that it is X-lined, and that the
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boy has normal genetic inheritance. You can predict that if the couple
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produces more children together, then the odds are that - Correct answer
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✔half of the boys and half of the girls will have hemophilia
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The primary purpose of the light-dependent reactions is to - Correct answer
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✔provide electrons and energy for the calvin cycle (light independent)
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Which of these is NOT a C4 plant?
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a. sugar cane
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b. peas
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c. pineapple
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d. maize
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e. corn - Correct answer ✔peas
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(sugar cane, pineapple, maize, corn are ALL C4 plants)
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detailed solutions 5
If purple is dominant in pea plants, a cross between P generation purple (true
5 5 5 5 5 5 5 5 5 5 5 5 5 5
breeding - always produce the same trait) and white plants (true breeding)
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will result in - Correct answer ✔all purple flowers in the F1 generation
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The advantage of sexual reproduction over asexual reproduction is - Correct
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answer ✔there is a mixing of genetic information into a new combination in
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the next generation
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Senescing cells are kept from entering _____ because they cannot ______. -
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Correct answer ✔S phase; initiate DNA replication
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The primary difference between mitosis and meiosis in animals is - Correct
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answer ✔the generation of haploid cells from diploid cells;
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the number of daughter cells that result (2 or 4);
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the number of times chromosomes align at the metaphase plate &;
5 5 5 5 5 5 5 5 5 5
the purpose of generating reproductive cells as opposed to generating somatic
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cells
Embryonic development begins with a single egg fertilized by a single sperm
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forming a zygote. The zygote then undergoes mitosis; how many cells would
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be present at the conclusion of 4 mitotic divisions? - Correct answer ✔16
5 5 5 5 5 5 5 5 5 5 5 5
, Genetic recombination in somatic cells is used to - Correct answer ✔repair
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damaged or broken chromosomes 5 5 5
During a certain stage of the cell cycle, chromatin is organized like "beads on
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a string." At this level of DNA compaction the "beads" are ____ and the
5 5 5 5 5 5 5 5 5 5 5 5 5 5
"string" is - Correct answer ✔nucleosomes; DNA
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A woman with normal blood clotting mates with a man who has hemophilia.
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Their first child is boy who has hemophilia. Tests show that the father and
5 5 5 5 5 5 5 5 5 5 5 5 5 5
son both have the same form of hemophilia, that it is X-lined, and that the
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
boy has normal genetic inheritance. You can predict that if the couple
5 5 5 5 5 5 5 5 5 5 5 5
produces more children together, then the odds are that - Correct answer
5 5 5 5 5 5 5 5 5 5 5 5
✔half of the boys and half of the girls will have hemophilia
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The primary purpose of the light-dependent reactions is to - Correct answer
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✔provide electrons and energy for the calvin cycle (light independent)
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Which of these is NOT a C4 plant?
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a. sugar cane
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b. peas
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c. pineapple
5
d. maize
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e. corn - Correct answer ✔peas
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(sugar cane, pineapple, maize, corn are ALL C4 plants)
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