PEARSON ETEXT FOR CAMPBELL BIOLOGY
12th Edition
ISBN: 9780135988046
Author: Urry
Publisher: PEARSON
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Chapter 23, Problem 2TYU
Summary Introduction
Introduction: The variation in DNA sequence of genome of members of a species is known as
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The term heterozygous means;
a) An organism has two different sex chromosomes
Ob) An organism was originally twins that fused together in the zygote stage
c) An organism has two identical alleles for a given gene
d) An organism has two different alleles for a given gene
DNA recombination occurs during the process of __________ and affects the population by ________
A) Meiosis, decreasing genetic variation
B) Meiosis, increasing genetic variation
C) Mitosis, decreasing genetic variation
D) Mitosis, increasing genetic variation
E) Both B and D are correct
F) Both A and C are correct
In a diploid species, each individual possesses (a) one allele for each locus (b) two alleles for each locus (c) three or more alleles for each locus (d) all the alleles found in the gene pool (e) half of the alleles found in the gene pool
Chapter 23 Solutions
PEARSON ETEXT FOR CAMPBELL BIOLOGY
Ch. 23.1 - Explain why genetic Variation within a population...Ch. 23.1 - Ot all the mutations that occur in a population,...Ch. 23.1 - Prob. 3CCCh. 23.2 - A population has 700 individuals, 85 of genotype...Ch. 23.2 - Prob. 2CCCh. 23.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 23.3 - In what sense is natural selection more...Ch. 23.3 - Distinguish genetic draft from gene flow in terms...Ch. 23.3 - WH AT IF? Suppose two plant populations exchange...Ch. 23.4 - What is the relative fitness of a sterile mule?...
Ch. 23.4 - Explain why natural selection is the only...Ch. 23.4 - Prob. 3CCCh. 23 - Typically. most of the nucleotide variabillity...Ch. 23 - Is it circular reasoning to calculate p ond q from...Ch. 23 - Would two small, geographically isolated...Ch. 23 - How might secondary sex characteristics in males...Ch. 23 - Natural selection changes allele frequencies...Ch. 23 - Prob. 2TYUCh. 23 - Prob. 3TYUCh. 23 - There are 25 individuals in population 1, all with...Ch. 23 - Prob. 5TYUCh. 23 - EVOLUTION CONNECTION Using at least two examples,...Ch. 23 - SCIENTIFIC INQUIRY INTERPRET THE DATA Researchers...Ch. 23 - Prob. 8TYUCh. 23 - SYNTHESI2E YOUR KNOWLEDGE This kettle lake forracd...
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- Which of the following is least likely to produce genetic variation in the offspring of an individual? (a) a DNA replication error caused by DNA polymerase in a body cell of the individual (b) a cross over event during meiosis that creates a new combination of alleles in the gametes (c) independent assortment of chromosomes during meiosis that creates a new combination of alleles in the gametes (d) the random fertilization of an egg cell by a sperm cell during sexual reproductionarrow_forwardWhat are some reasons that studies of human inheritance are difficult? (Select all that apply) a) humans have more complicated genes b) humans have a long lifespan c) humans have relatively few offspring d) there are more ethical issues to testing human subjectsarrow_forward(1) A very large population of birds is living on an island in the Pacific ocean. (2) There are no birds from the same species coming into the island or leaving the island. (3) Each member of the population survives and reproduces at the same rate. (4) When birds are choosing their mates, they choose based on how colorful their feathers are. (5) There are no new mutations arising in the population. Is it likely that this population is in Hardy-Weinberg equilibrium? If not, select the sentence that led you to conclude this. If yes, indicate that below. O Yes, this population is in H-W equilibrium. O Sentence 3 O Sentence 4 Sentence 2 O Sentence 1 O Sentence 5arrow_forward
- 1)Ganarles contain one kind of each chromosome because the homologous chromosomes separate during meiosis. True or False? 2)In humans, there are two alleles possible at the chromosome locus that determine blood type. True or False? 3) Mendel was a famous naturalist who developed the concept that lead to the laws of evolution. True or False? 4) Embryonic stem cells come from embryos made for research. True or False? 5) An organisms environment history, in addition to the phenotype, can influence the genotype. True or false? 6) During métodos homólogos chromosome sorteaste and the daughter cells have one copy of each kind of chromosome. True or False? 7) the surtidor include all the pair of chromosome except the X and Y Chromosome. True or False? 8) during DNA replication, the patent DNA molecule unerring and unzips. Then reach old stand serves as a template for a new stand. True or False? 9) mutations due to replication errors and environmental factors are quite common due to the proof…arrow_forwardhuman height is a example of _ a) codominence B) jumping genes C) polygenic inheritance D) dominant genes ????arrow_forwardWhy are toy poodles and rotweilers (dog breeds) members of the same species? A) They can mechanically breed with one another B) Their chromosomes and genes align. All of these D) They can produce offspring that are able to produce offspringarrow_forward
- Which of the following decreases genetic variation in a population? a)natural selection b)mutation c)gene flow d)meiosis e) A and C only (Option E is said to be incorrect)arrow_forwardA species with zero senescence would: A.) O Not show any decline in fitness with age. B.) Mature at an early age. C.) Live forever. D.) Not have any deleterious alleles.arrow_forwardTrue or False a.) Evolution creates genetic variation in a population. b.) Fitness refers to an allele's ability to help the organism evade predators. c.) The process of natural selection may increase or decrease the frequency of a particular allele in the population depending on the environment. d.) A potato species acquires a mutation in its catalasegene that allows it to function in very cold environments. However, this catalaseis denatured at room temperature. This is a good example of fitness cost.arrow_forward
- Which of the following statements about gene imprinting is correct?(a) Gene imprinting is a male reproductive strategy that can reduce the lifetime reproductivesuccess of females.(b) Gene imprinting is a female reproductive strategy that can reduce the lifetimereproductive success of males.(c) Gene imprinting is found only in placental mammals.(d) All statements are correct. A. (a) and (c) B. (a) and (b) C. (b) and (c) D. (d)arrow_forwardIn evolutionary terms, an organism's fitness is measured by its 1. a) population rate changes due to environmental pressures 2. b) contribution to the gene pool of the next generation 3. c) rate of genetic variability across mitotically changing exons 4. d) mutation rate due to genetic drift 5. e) all of the abovearrow_forward18. Some traits that can be counted and expressed I. Whole numbers Such as bristle number in Drosophila are:arrow_forward
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