- Disease is an biotic factor Fertility refers to the natural capacity to and the number of offspring produced Recruitment is NOT affected by immigration.
- 11. During which phase of meiosis does the DNA undergo replication? x Prophase I B. Metaphase I C. Anaphase I D. Prior to Meiosis I during interphase 12. What is the difference between anaphase I and anaphase II in meiosis? A. Anaphase I separates homologous chromosomes, while anaphase II separates sister chromatids. B. Anaphase l occurs in diploid cells, while anaphase II occurs in haploid cells. C. Anaphase I Involves crossing over while anaphase II does not. D. Anaphase l occurs before cytokinesis, while anaphase II occurs after. 13. In a species with a diploid chromosome number o(24)how many chromosomes will be present in each gamete after meiosis? 12 B. 24 C. 48 D. 6 14. At the beginning of meiosis, how many,sister chromatids are present in a cell with a diploid number of 8? A. 8 (B. 16 C. 4 D. 32 15. Which of the following accurately describes the role of the oocyte during oogenesis? A. It undergoes meiosis to produce four functional gametes. (B) It undergoes asymmetric division. producing one large functional gamete and polar bodies. C. It results in the production of diploid eggs. D. It can produce sperm cells as well. B. The exchange of genetic material between homologous chromosomes. C. The division of cytoplasm during cell division. D. The random assortment of chromosomes during metaphase. 17. What happens to the chromosome number in What happened by nondisjunction during Melosis I? A. All gametes will have a normal chromosome number. B. Half of the gametes will be diploid. Half will have one extra chromosome, and half will have one less. D. All gametes will be haploid. 18. If nondisjunction occurs during Meiosis II, what is the expected outcome for the gametes? A. Two normal gametes and two with an abnormal number of chromosomes. B. Four gametes with an abnormal number of chromosomes. ) Two gametes with an extra chromosome and two gametes with one less. D. All gametes will be normal. 19. What term describes the condition of having three copies of a chromosome instead of the normal two due to nondisjunction? A. Monosomy (B.) Trisomy C. Polyploidy D. Aneuploidy 20. If a gamete with an extra chromosome (n+1 fuses with a normal gamete (n), what will b the chromosome number of the resulting zygote? A. 2n B. 2n+1 C. 2n-1 D. n+1
- Products from cell culture are secreted to the media in active form True False
- There are commercial monoclonal antibodies produced from insect cells True False
- Question 1 (1 point) Consider the experiment described in Lecture 2.1 starting on slide 58 ("Meselson and Stahl Experiment'). Suppose that, after 1 generation, Meselson and Stahl had observed a single DNA band migrating exactly in between the N^14 and N^15 positions (red on the lecture slides). Further suppose that after two generations, they observed one band at the N14 position (orange)and one band at the N15 position (dark red / maroon). This result would be consistent with which model of DNA replication? None of the three models presented in class Dispersive Conservative Semi -conservative
