Final - Biological Sciences 1A Murphy FINAL EXAMINATION...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Biological Sciences 1A Murphy Page 1 FINAL EXAMINATION 1. Gametes are best described as. .. a. haploid cells that fuse to form a zygote. b. haploid cells that are always produced by meiosis. c. diploid cells that undergo a series of mitotic divisions to form an adult organism. d. haploid cells that undergo a series of mitotic divisions to form an adult organism. e. male and female diploid cells that fuse at fertilization. 2. The diagram below represents the life cycle of a fungus. If the stage marked “A” has 10 chromosomes per nucleus, then the stage marked “B” has ______ chromosomes per nucleus. a. 5 b. 10 c. 20 d. 40 e. The answer depends on how long the species has existed, since the number of chromosomes per nucleus doubles every generation. 3. Meiosis differs from mitosis in that. .. a. the cells that are produced by mitosis are always diploid. b. homologous chromosomes do not separate in meiosis. c. only cells in mitosis have spindles. d. meiosis occurs only in diploid cells. e. chromosome replication is followed by one division in meiosis, two in mitosis.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Biological Sciences 1A Murphy Page 2 4. The cell to the right was found in an organism that is known to have a diploid number of chromosomes equal to 6 (2n=6). Which of the following statements best describes the cell? a. The cell is the product of an abnormal meiosis. b. The cell is in prophase I of meiosis. c. The cell is in prophase II of meiosis. d. The cell is in telophase II of meiosis. e. The cell is in anaphase of mitosis. 5. Meiosis is an important stage in a species’ life cycle because. .. a. after going through meiosis, one cell produces a large number of gametes. b. the products of meiosis have a reduced number of chromosomes per nucleus. c. the chromosomes in the products of meiosis may have new combinations of alleles. d. without meiosis, it would be impossible to form a multicellular organism. e. both b and c are true. 6. Pea plants that were true breeding for red flowers were mated with plants that were true breeding for white flowers. The progeny all had red flowers. One of these progeny was then mated with itself. Some of the plants that grew from this second mating had red flowers; some had white flowers. What proportion of the white-flowered plants were heterozygous? a. 0% b. 25% c. 50% d. 67% e. 100% 7. Color blindness is an X-linked recessive condition. A color blind woman marries a man with normal sight. Which of the following combination of children could they possibly have? a. A color blind girl and a boy with normal sight
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/18/2008 for the course BIS 1A taught by Professor Gearhart during the Winter '07 term at UC Davis.

Page1 / 18

Final - Biological Sciences 1A Murphy FINAL EXAMINATION...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online