Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
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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(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 5
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…
Mutation (a) can produce new alleles. (b) can be harmful, beneficial, or neutral. (c) is a change in an organism’s DNA sequence. (d) all of the above
Chapter 23 Solutions
Campbell Biology (11th Edition)
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 - MAKE CONNECTIONS If a population stopped...Ch. 23.2 - A population has 700 individuals, 85 of genotype...Ch. 23.2 - The frequency of allele a is 0.45 for a population...Ch. 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 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_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_forwardWhich 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_forward
- Which of the following is not a contributor to genetic variation? (a) binary fission (b) crossing-over of homologous chromosomes (c) random assortment of homologous chromosomes (d) fertilizationarrow_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_forwardInterspecific hybrids, if they survive, are (a) always sterile (b) always fertile (c) usually sterile (d) usually fertile (e) never sterilearrow_forward
- Gene flow is accomplished by ______ A) migration B) sexual recombination C) natural selectionD) genetic driftE) mutation Then explain why the incorrect answers are wrong.arrow_forward10) Two processes that take place within a cell are shown here. Which of these statements correctly identify the processes and their outcomes? Select ALL that apply. A) Both processes increase genetic variation. B) Both processes can produce new phenotypes in an organism. C) Process II occurs randomly while process I is predictable. D) Process I is beneficial to the organism while process II is detrimental. E) Only process I can provide the basis for natural selection acting on phenotypes. Not Gradedarrow_forwardAll genetic differences between all the individuals of all the different species are a result of O a) mutations O b) the need for new traits O C) None of the other answers is correct. O d) differences in the rate of translation e) differences in the rate of transcriptionarrow_forward
- According to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) individuals will vary depending on geography and climate B) variation exists because not all genes will be expressed C) variation among individuals may arise as a result of mutations in the genetic code D) variation exists because different individuals will have different access to food and other resourcesarrow_forwardThe paternal and maternal genetic material which influences the traits is_____. a) RNAb) m-RNAc) DNAd) t-RNAarrow_forwardThe agouti gene determines coat colour in mice. Heterozygous mice have yellow coats, while homozygous dominant mice have black coats. However, having two copies of the recessive alleles is lethal. In a population of 2 000 mice, 1 082 mice have black coats. a) Calculate the frequency of each allele. Show all your work and express your answer as a value between 0 and 1 rounded to two decimal places. b) What percentage of the mouse population is expected to be carriers of the lethal allele? Show all your work and express your answer rounded to one decimal place. c) How many mice will die during fetal development? Show all your work and round your answer to the closest whole number.arrow_forward
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