chap 13

chap 13 - _1 The cell formed through fertilization is...

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_____1. The cell formed through fertilization is called a(n) a) gamete b) sperm cell c) zygote d) egg cell e) ovum _____2. If a sperm cell contains 8 chromosomes, it comes from an animal that has ____ chromosomes. a) 4 b) 8 c) 12 d) 16 e) 24 _____3. The haploid cells produced by meiosis in plants Next become a) gametes b) spores c) adult haploid plants d) adult diploid plants _____4. Another name for a tetrad is a(n) a) homologue b) bivalent c) oocyte d) gamete e) polar body _____5. During which stage of meiosis does crossing over occur? a) prophase I b) anaphase I c) telophase I d) prophase II e) anaphase II _____6. What is the importance of crossing over? a) It provides extra genetic material for the daughter cells. b) It increases the likelihood that daughter cells contain different genetic material. c) It increases chromosome condensation. d) It separates the homologous chromosomes. _____7. A synaptonemal complex is a) the internal structure of nucleoprotein that make up a chromosome b) a nucleoprotein lattice that forms between homologues in chiasmata c) the spindle fibers that attach to homologous chromosomes during meiosis d) the spindle fibers that attach from pole to pole without binding chromosomes e) the set of cells produced from a single original parent cell in oogenesis _____8. What does the term "chiasma" refer? a) the process of fertilization b) the process of crossing over c) a structure that holds together homologues during crossing over d) the period between meiosis I and meiosis II _____9. During which stage of meiosis are the bivalents arranged along the equator? a) prophase I b) metaphase II c) anaphase II d) prophase II e) metaphase I _____10. At which stage of meiosis is each chromosome composed of a single chromatid? a) prophase I b) anaphase II c) anaphase I d) prophase II e) metaphase I
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chap 13 - _1 The cell formed through fertilization is...

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