Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 10, Problem 12SQ
Summary Introduction
Introduction: A female mammal’s somatic cells consist of two X chromosomes, which are inherited from its parents. Those two chromosomes are tightly condensed and thereby one of them will get inactivated. This condensed form of X chromosome is called as a Barr body and the process of formation of Barr body is called as X chromosome inactivation. This is a normal process that takes place in the body of female mammals to equalize the expression of the sex cells.
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The characteristic “X” shape of chromosomes is _____.
a.
a result of maximum compaction of the chromosome
b.
due to the wrapping of DNA around histones
c.
only evident during cell division
d.
indicative of a cell that is no longer dividing
e.
only found in the female sex chromosome
1. What process enables the body to heal after an injury?
a.cell cycle
b.mitosis & meiosi
c.meiosisd.mitosis
e.none of them
2. Checkpoints in the cell cycle control system ___________.
a.stop cells from dividing
b.regulate the cells by stop and go signals
c.signal cells to undergo mitosis
d.ensure that a cell keeps dividing
3. Which statement is TRUE about meiosis? *
a.It retains the number of chromosome number.
b.It reduces the chromosome number by a quarter.
c.It doubles the chromosome count in gametes.
d.It reduces the chromosome number by half.
Choose the option that best fits the blank.
Henrietta Lacks was female, so, naturally, all the cells from her derived cancerous cell line have _________ chromosomes.
A. Only X
B. X and Y
C. Only Y
Chapter 10 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 10 - The expression of a gene may depend on _______. a....Ch. 10 - Prob. 2SQCh. 10 - Binding of ______ to _______ in DNA can increase...Ch. 10 - Prob. 4SQCh. 10 - Prob. 5SQCh. 10 - Muscle cells differ from bone cells because...Ch. 10 - Prob. 7SQCh. 10 - Homeotic gene products _______. a. flank a...Ch. 10 - A gene that is knocked out is ________. a. deleted...Ch. 10 - Which of the following includes all of the others?...
Ch. 10 - Prob. 11SQCh. 10 - Effect of Paternal Grandmothers Food Supply on...Ch. 10 - Prob. 2DAACh. 10 - Effect of Paternal Grandmothers Food Supply on...Ch. 10 - Prob. 12SQCh. 10 - A cell with a Barr body is ___ . a. a bacterium b....Ch. 10 - Operons _____. a. only occur in bacteria b. have...Ch. 10 - Prob. 15SQCh. 10 - Why are some genes expressed and some not?Ch. 10 - Prob. 2CTCh. 10 - Almost all calico cats (one is pictured in FIGURE...Ch. 10 - The photos above show flowers from Arabidopsis...
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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 chromosomesarrow_forwardCrossing over _________________________. a. only occurs in animal cells. b. involves breakages and exchanges between sister chromatids c. involves centrioles d. results in new combinations of alleles being channeled into the daughter cells e. occurs during mitosisarrow_forwardEvents that leads to the production of Siamese/conjoined twins.arrow_forward
- Why are dominant mutations in proto-oncogenes generally not inherited? A. Inherited mutations in proto-oncogenes would not affect cell division rate B. Inherited mutations in proto-oncogenes would decrease cell division rate and no viable embryo would form C. Inherited mutations in proto-oncogenes would increase cell division rate and no viable embryo would form D. Dominant mutations in proto-oncogenes are always inheritedarrow_forwardHomologous chromosomes_____ . a. are inherited from two parents b. are sister chromatids c. are different in size and in lengtharrow_forwardA diploid cell has_______ the number of chromosomes as a haploid cell. a. one-fourth b. half c. twice d. four timesarrow_forward
- a. exocytosis endocytosis b. hydrolysis O phagocytosis e. receptor-mediatea d. pinocytosis 11. Doubling of genetic material in preparation for division occurs in which phase of the cell cycle? a. GO phase b. G1 phase c. G2 phase d. M phase e. S phase 12. The sister chromatids line up at an invisible plate in which stage of meiosis? a. prophase b. metaphase c. anaphase d. telophase e. cytokinesis 13. In cellular respiration, oxygen is directly involved in a. glycolysis b. Krebs cycle 14. The energy in ATP is stored in the c. electron transport chain e. fermentation d. chemiosmosis a. adenine base c. phosphate group e. negatively-charged охуgen d. phosphate bond 15. The Krebs cycle and Calvin cycle are similar in that b. ribose a. they require oxygen by chemiosmosis b. they produce carbon dioxide 16. Which process will not proceed without oxygen? c. they use up ATP e. they produce ATP d. . they recycle their starting compounds c. fermentation d. glycolysis a. Krebs cycle b. electron…arrow_forwardMicroscopic examination of a section of a normal young adult ovary reveals large numbers of unusually large cells surrounded by a single layer of flat epithelial cells. In which phase of the cell cycle are these cells arrested? A. Diplotene stage of the 1st meiotic division B. Diplotene stage of the 2nd meiotic division C. Metaphase stage of mitosis D. Prophase stage of mitosis E. Prophase stage of the 2nd meiotic divisionarrow_forwarda. The ovaries produce secondary the female sex cells. b. Stem cells, called divide by to produce primary each form part of a c. At the onset of puberty, tens of thousands of ovaries. Between menarche and menopause, each primordial follicle develops into a in the and its primary oocyte completes d. Some primary oocytes become 23-chromosome cells that begin then pause. secondary oocyte is released into is completed when e. Each month, the uterine tube. the oocyte isarrow_forward
- The law of segregation of chromosomes arises due to events in _________. A. Mitosis and meiosis II B. Mitosis and meiosis I C. Meiosis I only D. Meiosis II onlyarrow_forwardMitotic spindle microtubules connect to ________ during prometaphase. a. kinetochores b. condensin c. centriolesarrow_forwardCrossing over mixes up_____ . a. chromosomes c. zygotes b. alleles d. gametesarrow_forward
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