BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
Author: BROOKER
Publisher: MCG
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Chapter 22, Problem 10TY
Summary Introduction
Introduction: Evolution refers to the changes which can be transferred from the parents to the offsprings. Designing of procedures and programs in order to modify traits in domesticated species is known as artificial selection. In artificial selection parents with desirable traits are selected by the breeder.
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Horizontal gene transfer is a process in which genetic material from an organism is
a. transferred from cell to cell.
b. transferred to its offspring.
c. transferred to another organism that is not the offspring of the first organism.
d. released into the environment.
Which of the following statements about genes is incorrect?
Select one:
O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg.
b. Genetic differences can result from changes in the DNA called mutations.
O c. Genes correspond to segments of DNA.
d. Under normal circumstances, each chromosome contains precisely one gene.
e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.
Which of the following statements best describes the outcome of a mutation?
a.
A mutation always results in a mutant genotype
b.
A mutation always results in a mutant karyotype
c.
A mutation always results in a mutant phenotype
d.
A mutation always results in a mutant protein
Chapter 22 Solutions
BIOLOGY-TEXT
Ch. 22.1 - Prob. 1CCCh. 22.1 - Overview of Evolution Experimental Questions What...Ch. 22.1 - Overview of Evolution Experimental Questions...Ch. 22.1 - Overview of Evolution Experimental Questions...Ch. 22.2 - Prob. 1CSCh. 22.2 - Prob. 1CCCh. 22.2 - Prob. 2CCCh. 22.2 - Prob. 3CCCh. 22.3 - The Molecular Processes Concept Check: Why do...Ch. 22.3 - Prob. 1CS
Ch. 22.3 - Prob. 2CCCh. 22 - Prob. 1TYCh. 22 - Lamarcks vision of evolution differed from Darwins...Ch. 22 - Which of the following scientists influenced...Ch. 22 - Prob. 4TYCh. 22 - Vestigial structures are anatomical structures a....Ch. 22 - Which of the following is an example of a...Ch. 22 - Prob. 7TYCh. 22 - Prob. 8TYCh. 22 - Prob. 9TYCh. 22 - Prob. 10TYCh. 22 - Evolution that results in adaptation is rooted in...Ch. 22 - What is convergent evolution? How does it support...Ch. 22 - Prob. 3CQCh. 22 - Prob. 1COQCh. 22 - Prob. 2COQ
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- A change in chromosome structure that does not involve a change in the total amount of genetic material is?a. a deletion. b. a duplication. c. an inversion.d. none of the above.arrow_forwardChromosome translocations include: A. Alterations in which the genetic material remains the same but rearranged B. Alterations in which the total amount of genetics information increases C. Alterations in which the total amount of genetics information decreases D. Variations in the chromosome numberarrow_forwardWhich of the following evolutionary changes is an illustration of horizontal gene transfer? the human point mutation which changes a T into an A in the sickle-cell b-globin gene B. origin of the tetraploid potato (Solanum tuberosum) from its diploid ancestor (Solanum stenotomum) non-disjunction of the duplicated human chromosome 21, causing Down’s syndrome D. the green sea slug acquiring the genes for making chlorophyll from the chloroplasts of green algae the single gene deletion which can reduce the variety of mating types in yeastarrow_forward
- Because of recombination: a. new alleles are created. b. haplotypes shorten with each generation. c. genetic diversity is decreased. d. female and male phenotypes differ. e. None of the above is correctarrow_forwardLocus heterogeneity refers to a genetic disorder thata. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parents.arrow_forwardGenetic linkage occurs becausea. genes that are on the same chromosome may affect thesame character.b. genes that are close together on the same chromosometend to be transmitted together to offspring.c. genes that are on different chromosomes are independentlyassorted.d. none of the above.arrow_forward
- In an organism’s genome, autosomes are a. the chromosomes that differ between the sexes. b. chromosomes that are involved in sex determination. c. only inherited from the mother (maternal inheritance). d. all of the chromosomes other than sex chromosomesarrow_forwardIn which of the following types of large-scale mutations would there be a loss of genetic information from a cell? a. translocation b. deletion c. inversion duplication e. both a. and b.arrow_forwarddarrow_forward
- Which of the following are not responsible for increasing genetic diversity in an organism? Select one: O a. Independent assortment b. Random pairing of gametes c. DNA replication d. Crossing over O e. None of the abovearrow_forwardDuring the molecular process of homologous recombinationbetween homologous chromosomes,a. a Holliday junction forms.b. branch migration occurs.c. a heteroduplex region forms.d. all of the above occur.arrow_forwardWhich of the following is correct regarding polytene chromosomes? options: A. Exposure to a sublethal dose of X-rays causes spontaneous mutations. B. Polytene chromosomes have been useful to observe specific bands correlated with individual genes. C. Both A and B D. None of the abovearrow_forward
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