Genetics: A Conceptual Approach by Benjamin A. Pierce

By Benjamin A. Pierce

Designed for introductory genetics classes, "Genetics: A Conceptual procedure" makes a speciality of the $64000 suggestions and mechanics of genetics with out wasting scholars in a sea of aspect. Drawing on greater than two decades of educating event, the writer makes this frequently complicated topic look transparent and available by means of making very important connections among subject matters, supplying recommendation and encouragement at tricky areas, and describing the folks, areas, and experiments of genetics that make the topic fascinating and alive.

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What is the diploid number of chromosomes in this plant? Give the names of each stage of mitosis or meiosis shown. (a) G2 23. * 24. *25. 26. 22. A cell has 1x amount of DNA in G1 of interphase. How much DNA (in multiples or fractions of x) will be present per cell at the following stages? (b) Anaphase of mitosis (c) Prophase II of meiosis (d) After cytokinesis associated with meiosis II A cell in prophase II of meiosis contains 12 chromosomes. How many chromosomes would be present in a cell from the same organism if it were in prophase of mitosis?

Concepts In the stamen of a flowering plant, meiosis produces haploid microspores that divide mitotically to produce haploid sperm in a pollen grain. Within the ovary, meiosis produces four haploid megaspores, only one of which divides mitotically three times to produce eight haploid nuclei. During pollination, one sperm fertilizes the egg cell, producing a diploid zygote; the other fuses with two nuclei to form the endosperm. Chromosomes and Cellular Reproduction (a) 37 (b) Pistil Stamen Ovary Microsporocyte (diploid) 1 In the stamen, diploid microsporocytes undergo meiosis… Flower Megasporocyte (diploid) 6 Diploid megasporocytes undergo meiosis… Diploid, 2n Meiosis Meiosis Haploid, 1n 2 …to produce four haploid microspores.

18) homologous pair (p. 20) diploid (p. 20) haploid (p. 20) telomere (p. 21) origin of replication (p. 21) sister chromatid (p. 22) cell cycle (p. 22) interphase (p. 22) M phase (p. 22) mitosis (p. 22) cytokinesis (p. 22) prophase (p. 23) prometaphase (p. 23) metaphase (p. 23) anaphase (p. 23) telophase (p. 23) meiosis (p. 29) fertilization (p. 29) prophase I (p. 29) synapsis (p. 29) bivalent (p. 29) tetrad (p. 29) crossing over (p. 29) metaphase I (p. 30) anaphase I (p. 30) telophase I (p. 30) interkinesis (p.

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