Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Question
Chapter 9.2, Problem 2MC
Summary Introduction
To analyze:
The way diploid cells, homologous chromosomes, and replicated chromosomes are related.
Introduction:
A cell that is created when two haploid gametes combine to form a single cell is called a diploid cell. Both the female and the male gametes are known as eggs and sperm, respectively. In their natural state, these two gametes are haploid, but when they combine to create a zygote, they become diploid. 2n chromosomes make a diploid creature.
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: How many chromatids are present for each type of chromosome at the completion of crossing over? What two structures hold the chromatids together at this stage?
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Illustrate the chromosome changes in interphase and mitosis using a diploid cell that is 2n=4 (two large and two small
chromosomes).
Label the circles as G1 and G2 stages of interphase and each phase of mitosis (in order).
Draw the chromosome in each circle using the following guidelines.
1) For unreplicated chromosome draw a line (/) and for replicated chromosome draw an X.
2) For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase.
3) Skip drawing the nuclear membrane or spindle fibers, since we are focusing on the chromosomes.
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the DNA molecule. Each chromosomes can have a thousand genes but we are focusing on these two.) Ask me Qs in class if
anythign on this is not clear.
Describe the structure of a duplicated chromosome, including the sister chromatids, centromeres, and kinetochores.
Chapter 9 Solutions
Biology: Concepts and Investigations
Ch. 9.1 - Prob. 1MCCh. 9.1 - How can asexually reproducing organisms acquire...Ch. 9.1 - Prob. 3MCCh. 9.2 - Prob. 1MCCh. 9.2 - Prob. 2MCCh. 9.3 - How do haploid and diploid nuclei differ?Ch. 9.3 - Prob. 2MCCh. 9.3 - Prob. 3MCCh. 9.3 - Prob. 4MCCh. 9.4 - What happens during interphase
Ch. 9.4 - How do the events of meiosis I and meiosis II...Ch. 9.5 - Prob. 1MCCh. 9.5 - Prob. 2MCCh. 9.5 - How are identical twins different from fraternal...Ch. 9.6 - Prob. 1MCCh. 9.6 - In what ways are mitosis and meiosis different?Ch. 9.7 - Prob. 1MCCh. 9.7 - Prob. 2MCCh. 9.8 - What are the stages of sperm development in...Ch. 9.8 - Prob. 2MCCh. 9.8 - How does gamete production in plants differ from...Ch. 9.9 - Prob. 1MCCh. 9.9 - Prob. 2MCCh. 9 - Prob. 1MCQCh. 9 - Prob. 2MCQCh. 9 - Prob. 3MCQCh. 9 - Prob. 4MCQCh. 9 - Prob. 5MCQCh. 9 - Explain why evolution often selects traits that...Ch. 9 - Describe a situation in which asexual reproduction...Ch. 9 - Prob. 3WIOCh. 9 - Draw all possible metaphase I chromosomal...Ch. 9 - Prob. 5WIOCh. 9 - List examples of abnormalities in chromosome...Ch. 9 - Prob. 7WIOCh. 9 - Prob. 8WIOCh. 9 - 1. Review section 9.5 and the Survey the Landscape...Ch. 9 - 2. Fit the following terms into this concept map:...Ch. 9 - 3. Create a separate concept map that includes...
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Similar questions
- cell type: 9) Label the figure below. Chromosome number: cytokinesis by: division type: А- В- С- D- E- the halves the number of chromosomes, and at the same time, stage. The result is 10) daughter cells event that causes genetic diversity takes place in called (n? 2n?). An organism with two of each kind of chromosome is said to be: (3) tetraploid (1) haploid (2) diploid (4) polyploid. In multicellular organisms, mitosis results in: (1) reproduction (2) growth and repair (3) sperm and egg production (4) fertilization. If an organism produced an egg that had 20 chromosomes, the body cells of that organism should have: (1) 10 chromosomes (2) 20 chromosomes (3) 30 chromosomes (4) 40 chromosomes. 11) is what helps us grow and is why we are all unique! Human female karyotype contains .... (number) pairs autosomal and sex chromosomes. separate to go opposite poles in Anaphase in mitosis, while in Meiosis in AnaphaseI. (how many?) 12) If a diploid parent cell with 8 chromosomes (2n=8)…arrow_forwardIdentify centromere, duplicated and unduplicated chromosomes in the following diagram.arrow_forwardDistinguish between a sister chromatid and a chromosome.arrow_forward
- Are sister chromatids attached at the centromere considered to be one or two chromosomes?arrow_forwardDistinguish between homologous chromosomes and sister chromatids.arrow_forwardConsider a diploid organism with 18 chromosomes. Answer each question on a per cell basis. How many chromosomes are there during metaphase? How many functional centromeres are there during anaphase? How many chromosomes are there during telophase I after cytokinesis? How many chromosomes are there during prophase II? How many chromatids are there in anaphase II? How many kinds of chromosomes are there?arrow_forward
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