Biology Final Exam -Chap 13
6. If we continued to follow the cell lineage from question 5, then the DNA content of a single cell at metaphase of meiosis II would be:
A.0.25x B.0.5x C.x D.2x E.4x (C)
5. 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 metaphase of meiosis I would be:
A.0.25x B.0.5x C.x D.2x E.4x (D)
7. How many different combinations of maternal and paternal chromosomes can be packaged in gametes made by an organism with a diploid number of 8 (2n =8)?
A.2 B.4 C.8 D.16 E.32 (D)
8. How many genes are present in the human genome?
A.23 B.46 C.Hundreds D.Tens of Thousands E.A virtually infinite number (D)
10. Fertilization produces _________________.
A.A haploid zygote in some life cycles and a diploid zygote in others B.A haploid zygote C.A diploid zygote D.A diploid zygote except during the gametophyte stage of alternation of generations E.A multicellular haploid organism in the alternation of generations life cycle (C)
1. A human cell containing 22 autosomes and a Y chromosome is:
A.A sperm B.An egg C.A zygote D.A somatic cell of a male E.A somatic cell of a female (A)
2. Which life cycle stage is found in plants but not animals?
A.Gamete B.Zygote C.Multicellular Diploid D.Multicellular Haploid E.Unicellular Diploid (D)
3. Homologus chromosomes move toward opposite poles of a dividing cell during:
A.Mitosis B.Meiosis I C.Meiosis II D.Fertilization E.Binary Fusion (B)
4. Meiosis II is similar to mitosis in that:
A.Sister chromatids separate during anaphase B.DNA replicates before the division C.The daughter cells are diploid D.Homologous chromosomes synapse E.The chromosome number is reduced (A)
9. Sexual and Asexual reproduction are alike in that _______________.
A.They both give rise to genetically distinct offspring B.They both involve two parents C.They both require meiosis to complete the reproductive cycle D.They can both occur in multicellular organisms E.In both cases, every parent transmits all of its genes to its property (D)
