BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 8, Problem 7SA
Summary Introduction
Introduction:
In the nucleus of each cell, DNA is packaged into thread-like structures known as chromosomes. Each chromosome contains DNA coiled around histone proteins. Human body cells have two sets of 23 chromosomes. 22 pairs of chromosomes are autosomes and one pair is the sex chromosome.
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Human body cells are diploid, which mean they______ . a. divide to form two cells b. have two full sets of chromosomes c. contain two chromosomes
DNA doubles ___.
A. before mitosis
B. during metaphase of mitosis
C. at any time during cell division
D. during prophase of mitosis
E. immediately before prophase of mitosis
interphase chromosomes are __________ while mitotic chromosomes are
a. composed of 4 DNA strands; composed of 2 DNA strand
b. composed of 1 DNA Strand; composed of 2 DNA strands
c.composed of 2 DNA strands; composed of 1 DNA strand
d. composed of 2 DNA strands; composed of 4 DNA strands
Chapter 8 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 8 - Which is not a nucleotide base in DNA? a. adenine...Ch. 8 - What are the base-pairing rules for DNA? a. A-G,...Ch. 8 - Similarities in ___________ are the basis of...Ch. 8 - One species DNA differs from others in its...Ch. 8 - In eukaryotic chromosomes, DNA wraps around...Ch. 8 - The chromosome number ________ . a. refers to a...Ch. 8 - Prob. 7SACh. 8 - DNA replication requires ________ . a. DNA...Ch. 8 - Energy that drives the attachment of a nucleotide...Ch. 8 - When DNA replication begins, _______ . a. the two...
Ch. 8 - The phrase 5to3 refers to the _________ . a....Ch. 8 - After DNA replication, a eukaryotic chromosome...Ch. 8 - Prob. 13SACh. 8 - _________ is an example of reproductive cloning....Ch. 8 - Match the terms appropriately. ___ nucleotide ___...Ch. 8 - Determine the complementary strand of DNA that...Ch. 8 - Woolly mammoths have been extinct for about 4,000...Ch. 8 - Xeroderma pigmentosum is an inherited disorder...
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- Homologous chromosomes_____ . a. are inherited from two parents b. are sister chromatids c. are different in size and in lengtharrow_forwardMitosis is a form Of ____. There are three other ways in which these two processes differarrow_forwardMitosis a. is division of the genetic material within the nucleus b. is the formation of sex cells c. creates diversity in genetic potential d. is always a part of the cell cyclearrow_forward
- After mitosis and cytokinesis, the chromosome number of descendent cells is ____ the parent cell.arrow_forwardIn intervals of interphase, G stands for_____ . a. gap c. Gey b. growth d. genearrow_forwardAn organism’s traits are determined by the specific combination of inherited ______. a. cells b. genes c. proteins d. chromatidsarrow_forward
- The individual chromosomes become visible with a light microscope during which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forwardThe process of Mitosis is _______ Cell division that results in two identical daughter cells A physical trait that an individual exhibits The growth and development phase of the cell cycle An individual with two copies of the same allele for a specific trait A variant of a genearrow_forwardWhat type of cell is undergoing mitosis in this picture? A. n=2 B. n=4 C. n=8 D. 2n=2 E. 2n=4 F. 2n=8arrow_forward
- The cell-free DNA test name was coined from the fact that ______. A. fetal DNA floats freely in the mother's blood, not inside the cell. B. no cell sample is required C. cells move freely in the fetal DNA D. None of the chocies are correctarrow_forwardIn an organism with 6 pairs of chromosomes, how many chromosomes and DNA molecules (chromatids) will be present in EACH cell at the following stages: a. G1: chromosomes _______ chromatids _________ b. Metaphase of mitosis: chromosomes ______ chromatids Answer _______ c. Following telophase of mitosis: chromosomes________ chromatids _____ d. Metaphase of meiosis I: chromosomes _____ chromatids ______ e. Following telophase of meiosis I: chromosomes _______ chromatids ________ f. Following completion of meiosis II: chromosomes _____ chromatids _____arrow_forwardAfter mitosis the chromosome number of a descendant cell is ______ the parent cell's.a. the same asb. one-half ofc. rearranged compared tod. double that oarrow_forward
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