BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 12, Problem 2SA
Alternative forms of the same gene are called _________ .
| a. gametes | c. alleles |
| b. homologous | d. sister chromatids |
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Which of these things happens in meiosis but Not mitosis?
A. sister chromatids separate from each other
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C. homologous chromosomes pair up
________is an example of reproductive cloning. a. Somatic cell nuclear transfer (SCNT) b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. In vitro fertilization
Gamete formation results in __________________________.
a.
the pairing of homologous chromosomes
b.
offspring that are genetic clones of the parent
c.
asexual reproduction
d.
the fusion of gametes.
e.
offspring that are genetically distinct from each other
Chapter 12 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 12 - One evolutionary advantage of sexual over asexual...Ch. 12 - Alternative forms of the same gene are called...Ch. 12 - Meiosis is a necessary part of sexual reproduction...Ch. 12 - Meiosis ________. a. occurs only in germ cells of...Ch. 12 - Sexual reproduction in animals requires ________ ....Ch. 12 - Dogs have a diploid chromosome number of 78. How...Ch. 12 - Prob. 7SACh. 12 - Prob. 8SACh. 12 - Crossing over mixes up _______ . a. chromosomes c....Ch. 12 - Crossing over happens during which phase of...
Ch. 12 - _________ contributes to variation in traits among...Ch. 12 - Which of the following is one of the very...Ch. 12 - Match each term with its description....Ch. 12 - In your own words, explain why sexual reproduction...Ch. 12 - Make a simple sketch of meiosis in a diploid germ...Ch. 12 - The diploid chromosome number for the body cells...
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- 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_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_forwardThe period of the cell cycle when DNA replicates is _________________. a. G1 phase b. G2 phase c. S phase d. prophase.arrow_forward
- ________________occur simultaneously. a. G1 phase and G2 phase b. Interphase and mitosis c. Cytokinesis and telophase d. Prophase and metaphasearrow_forwardappear during various stages of either mitosis or meiosis, and answer the following questions. 45. Refer to the drawings in Figure 13.2 of a single pair of homologous chromosomes as they might II II IV VI Figure 13.2 Which diagram represents prophase I of meiosis? a. b. v II d. IV e. VI c. 46. If a cell does not receive a go ahead signal at the Gl checkpoint in the cell cycle then it will a. proceed on to the "S" phase b. go directly to jail c. proceed to mitosis d. enter a nondividing state called the Go phase DO not pass GO. DO not collect $200 47. When T2 phages infect bacteria and make more viruses in the presence of radioactive phosphorus, what is the result? The bacterial DNA will be radioactive. The viral DNA will be radioactive. The boacterial DNA will be radioactive. The viral DNA will be radioactive. The viral proteins will be radioactive. b. c. The viral DNA will be radioactive. d. e. The viral proteins will be radioactive. 48. Each amino acid attaches to its proper tRNA…arrow_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_forward
- Organism X has the genotype Ccdd. How many different types of gametes can it make and in what proportion? * A. 3 Cd 1 cd B. 1 CD: 1 Cd : 1 cD 1 cd C. 1 Cc : 1 dd D. 1 Cd 1 cd A human female "carrier" who is heterozygous for the recessive, sex-linked trait hemophilia (XHXH), marries a normal male (XHY). What proportion of their male progeny will show the trait? A. 1/4 B. 1/2 C. 0 D. Allarrow_forwardI need the answer as soon as possiblearrow_forwardAt which stage of meiosis are sister chromatids separated from each other? a. prophase I b. prophase II c. anaphase I d. anaphase IIarrow_forward
- Sister chromatids separate during anaphase of which of thefollowing?a. mitosis c. meiosis IIb. meiosis I d. both a and c.arrow_forwardIdentify whether the following terms is related to either mitosis or meiosis or both. 1. Identify whether the following terms is related to either mitosis or meiosis or both. a. mitosis b. meiosis c. both 2. somatic cells/ body cells a. mitosis b. meiosis c. both 3. two genetically similar diploid cellsarrow_forwardChoose 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 Yarrow_forward
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