All human populations outside of Africa combined have much less genetic variation that that seen in Africa, providing even more support for the theory that modern humans migrated out of Africa fairly recently. O True O False Less genetic variation in groups other than those of recent African descent, i.e. the relative genetic uniformity shared by groups like European Americans, makes them less susceptible to disease. O True O False

All human populations outside of Africa combined have much less genetic variation that that seen in Africa, providing even more support for the theory that modern humans migrated out of Africa fairly recently. O True O False Less genetic variation in groups other than those of recent African descent, i.e. the relative genetic uniformity shared by groups like European Americans, makes them less susceptible to disease. O True O False

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 1DID

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Snakes evolved from ancestors who had the ability to walk. Some snakes, in fact, still have small pelvis and leg bones that are remnants from this ancestor. What are these caled? Vestiglal structure O Homologous strucre O Sympatric structure O Molecular homology In the 1890s, hunting reduced the northern elephant seal population to only 20 individuals. Due to conservation efforts, their population size today is above 30,000. Of what is this an example? Founder effect
@ 2 W S Rehpogs are mythical creatures. They are small and not very smart. Rehpogs live on the ground in a flat, warm habitat. Their fur texture and color ranges from thick purple fur to thin pink fur, depending on allele distribution. The dominant fur allele (R) codes for thick purple fur. The recessive allele (r) codes for thin pink fur. REMEMBER: a phenotype (fur color) is the physical expression of a genotype (two- letter code for the alleles present in that individual). Each individual has two alleles for fur color: X RR genotype is homozygous dominant = Thick purple fur phenotype Rr genotype is heterozygous = Thick purple fur (because of the presence of one dominant allele) rr genotype is homozygous recessive = Thin pink fur (because of the absence of a dominant allele) For the purposes of this experiment, Rehpogs mate once per year and produce two offspring each year. Rehpogs are monogamous, faithful and fertile. # 3 e d C C $ 4 r f V % 5 t g Oll 6 b y h & 7 O 8 n JL u i j O L m…
The increased prevalence of individuals with sickle cell anemia in regions of the world with high rates of malaria is best described as an example of O Convergent Evolution O Natural Selection O Anti-Parasitism urces O Metabolic Enhancement
Chargaffs DNA Data Base Compoeltion In Varlous Speclee (%) Species A T G Homo sapiens 31.0 31.5 19.1 18.4 Drosophila melanogaster 27.3 27.6 22.5 22.5 Zea mays 25.6 25.3 24.5 24.6 Neurospora crassa 23.0 23.3 27.1 26.6 Escherichia coli 24.6 24.3 25.5 25.6 Bacillus subtilis 28.4 29.0 21.0 21.6 The table above shows the amount of the 4 DNA nucleotides found in 6 different species. Another species has DNA that is 10% Adenine (A). What is the % of T, G, and C in the DNA of this species? You may copy and paste this sentence to help you answer clearly: The species is 10% A, 96 T, 96 G and 96 C. The species is 10% A, 10 % R, DELL F11 PrtScr F4 F5 F6 F7 F8 F9 F10 F12 In & 8. 9. 5 6. 7 9. E T Y *00 %S4
Match the evolution concepts. ____ gene flow a. outcome can be interdependence ____ sexual selection b. changes in a populations allele frequencies due to chance alone ____ extinct c. alleles enter or leave a population ____ genetic drift d. adaptive traits make their bearers better at securing mates. ____ coevolution e. no more living members ____ adaptive radiation f. burst or divergences from one lineage into many
1. Describe the conditions in order for natural selection to occul. neproduction, heredity, variation in fitness or Organisms, variation Members of the popuiaion.if they are me natural selection automatically Tesults, 2. How does natural selection and evolution lead to speciation? Natural that and may even indy wal characters among organisms 1. Kely to survive and reproduce entually ead t0 speciation- selectio can result in are More Topic 4: Biodiversity Essential Question: Why is biodiversity important and how can it be protected? Vocabulary: Match the following vocabulary words with their definition. 1. Biodiversity 2. Species diversity 3. Genetic diversity 4. Ecosystem diversity 5. Extinction A species dying out b. The variety of life in the world The variety of genetic make ups d. The variety of species in an environment The variation of ecosystems within a biome a. с. e. Questions 1. Why are the world's rainforests so important? 2. Predict solutions for slowing the loss of…
Imagine a population of pea plants growing in Petaluma. 100% of the gene pool is P alleles, for purple flowers. How can white alleles (p) enter this population? Select all the correct answers. O mutation gene flow O genetic drift O natural selection
NATURAL SELECTION A. 1 Q # 1. Describe what is happening in figures 1-3. Is the population of mice different in figure 3 than in figure 1? Explain why. 食 Adapted from the University of California, Los Angeles Life Sciences 1 Demonstration Manual Copyright 2008 by Jennifer Doherty and Dr. Ingrid Waldron, Department of Biology, University of Pennsylvania¹ CAS ced by by each complete de So sfir QUA 2 why this 49 M ness is que which Qu 3 yould biologists ha $02. cm/sec. and produce offspring who C Fo C Living things that are well adapted to their environment survive and reproduce. Those that are not well adapted don't survive and reproduce. An adaptation is any characteristic that increases fitness, which is defined as the ability to survive and reproduce. 2. What characteristic of the mice is an adaptation that increased their fitness? ¹ Teachers are encouraged to copy this student handout for classroom use. A Word file (which can be used to prepare a modified version if desired), Teacher…
The results of new studies in population genetics that confirm a higher degree of genetic variation in African populations as compared to any other geographic group supports… Group of answer choices limited variation in phenotypic traits between geographic populations in Africa extensive gene flow between populations of Africa our African origins multiregional origins exposure to UV radiation causing rapid DNA mutation
In a small group of people living in a remote area, there is a high incidence of "blue skin", a condition that results from a variation in the structure of hemoglobin. All of the "blue-skinned" residents can trace their ancestry to one couple, who were among the original settlers of this region. The unusually high frequency of "blue skin" in the area is an example of [ Select ] [Select] mutation natural selection sexual selection « Previous Next heterozygote advantage founder effect checkedat 9:39pm Subm
Imagine a population of bacteria growing in a carefully controlled and isolated petri dish in a laboratory. The bacteria are all genetically identical to each other. How can the trait frequencies change over time in this population? All are correct O genetic drift O gene flow mutation O natural selection
Tools Add-ons Help Last edit was 4 minutes ago E Courier New 15 BIU 三 ... 5 .| 1859 Charles Darwin, himself a proponent of pangenesis, publishes On the - his explanation of evolution by natural selection. Origin of Species Darwin provides a plethora of evidence on how valuable traits become more common in a population, but does not provide any explanation for the mechanism of transmission of these traits. Summarization my own words: I !! lilı