Biology: Science For Life With Physiology Plus Mastering Biology With Pearson Etext -- Access Card Package (6th Edition) (what's New In Biology)
6th Edition
ISBN: 9780134794679
Author: BELK
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 8LTB
All of the following statements support the hypothesis that humans cannot be classified into biological races except.
- There is more genetic diversity within a racial group than average differences between racial groups;
- Alleles that are common in one population in a racial group may be uncommon in other populations of the same race;
- Geneticists can use particular SNP alleles to identify the ancestral group(s) of any individual human;
- There are no alleles found in all members of a given racial group;
- There is genetic evidence of mixing among human populations occurring thousands of years ago until the present.
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Students have asked these similar questions
Is “Race” a valid biological way to categorize modern humans? Why or why not?
How many biological races of humans are there in the world today?
Populations of people in any given world region often share more phenotypic characteristics with each other than they do with people in populations in other world regions. Explain how evolutionary forces contributed to this phenomenon.
Which of the following statements best characterizes genetic diversity in humans?
1.) There are far more genetic differences between populations/groups than there is variation within populations.
2.) Between-group differences in most phenotypic traits (e.g., athletic ability, performance on standardized tests, etc.) are mostly inherited and due to the
effects of natural selection.
3.) The vast majority of polymorphisms (such as SNPs) in the genome are informative about a person's ancestry (in other words, you could get a pretty good idea of someone's ancestry by looking at their genotype at just about any random SNP in the genome).
4.) Humans have much lower levels of genetic diversity than most other animals.
The classical twin study is established as the definitive study design for investigating the relative importance of genetic and environmental factors to traits and diseases in human population.
Monozygotic (identical) twins share all of their genes, while Dizygotic(fraternal) twins share only about 50 percent of them, the same as non-twin siblings. If a researcher compares the similarity between sets of identical twins to that of fraternal twins for a particular trait, then any excess likeness between the identical twins should be due to genes rather than environment.
Write an information leaflet evaluating the benefits and dilemmas in the use of human twin studies to investigate the causes of variation.
Chapter 13 Solutions
Biology: Science For Life With Physiology Plus Mastering Biology With Pearson Etext -- Access Card Package (6th Edition) (what's New In Biology)
Ch. 13 - Define biological species.Ch. 13 - Prob. 2LTBCh. 13 - Prob. 3LTBCh. 13 - Prob. 4LTBCh. 13 - Prob. 5LTBCh. 13 - Prob. 6LTBCh. 13 - The biological definition of race corresponds to...Ch. 13 - All of the following statements support the...Ch. 13 - Similarity in skin color among different human...Ch. 13 - Prob. 10LTB
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The culturally constructed concept of “race” holds little value in scientific biological contexts because... Group of answer choices cultural explanations of human variation do not withstand the scientific method there is more genetic variation within groups than between them of the dichotomy between biological and cultural perspectives of race there is no such thing as race race has been continuously used to oppress categorized groupsarrow_forwardWhich of the following are true about human variation? (Choose all that apply): Group of answer choices Genotype refers to how a person looks, through interaction of genes and environment. Siblings are more like each other, genetically, than they are to either of their parents. Usually, it is only identical twins (or sometimes triplets or other multiple births) who have identical DNA, and even so, there is still some phenotypic variation between them. You could have genes for being tall, but if your mother (or even grandmother) had poor nutrition during fetal gestation, you could be shorter than your genes allow. You can produce taller offspring by stretching and remembering to stand up as tall as you can.arrow_forwardSince DNA sequences are passed down from one generation to the next, people with closer familial relationship tend to have more of their DNA sequences in common. As a result, people who are more genetically related tend to share some similar patterns in their DNA fingerprinting. If you are comparing samples, which of the following can be determined with DNA fingerprinting? Group of answer choices? right chances Which fraternal twin each sample came from Which identical twin each sample is from If the samples are from people who are married If the samples came from mother and child asap pleasearrow_forward
- According to the Hardy-Weinberg Equilibrium Equation, all of the following slow down or stop evolution EXCEPT (choose as many as apply): Group of answer choices very small population very large population no one leaves or comes into the population everyone has equal numbers of offspring there are no mutations there are lots of mutations there is non- random matingarrow_forwardWhich of the following statements about genetic drift is correct? Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and increases genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and reduces genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and does not affect genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and do not affect genetic variation within populations. ) Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and tend to reduce genetic variation within populations.arrow_forwardThe Hardy–Weinberg principle states that allele and genotype frequencies remain constant from one generation to the next, as long as specific conditions are met.Choose Yes or No for the conditions that must be met from the provided statements below. Mutations are exponentially occurring. All members of the population breed. Everyone produces the same number of offspring. The population is infinitely large. There is no migration in or out of the population. No net mutations are occurring. Natural selection of beneficial traits is occurring. Natural selection is not occurring. All mating is completely random. Offspring are able to migrate out of the population.arrow_forward
- A freshwater fish called the blue danio (Danio kerri) has pink stripes down its sides. What has to be true about color pattern in these fish for it to be subject to natural selection? Group of answer choices It can only be a trait that is due to one gene that only has 2 alleles. It must be identical in all individuals in the population. It must be derived from their diet – it can’t be a genetically-based trait. It must be a genetically-based trait. It must be present in males but not in females.arrow_forwardWhich of the following is true about natural selection? Group of answer choices it acts on individuals it typically does not involve changes in genotype frequencies in a population it involves individuals willfully changing their genotype and/or phenotype in order to become better matched to their environment and leave more offspring it is a random process it involves humans increasing the frequency of desirable traits in a species by selecting which individuals breedarrow_forwardWhich of the following best explains the phrase “survival of the fittest” in terms of evolution by natural selection? The strongest and fastest individuals will always survive and reproduce more often. The individuals that are the healthiest will always get more resources and survive better. Only individuals that have the most mates will survive with limited resources. The individuals that survive better and reproduce more often will pass their traits on more often.arrow_forward
- If there isn’t such a thing as biological race, then why do certain diseases and conditions (like osteoporosis, alcohol allergy/”Asian flush,” sickle cell anemia, Tay Sachs, hypertension, and cystic fibrosis) tend to be found in certain racial groups?arrow_forwardWhich of the following is a reason we see continuous, quantitative traits like weight? - Environment doesn't play a role in quantitative traits - Multiple genes can play a role in determining the traits - Only one allele on one gene is responsible for a given quantitative trait - Natural selection doesn't act on quantitative traitsarrow_forwardWhich of the following is a necessary condition for natural selection to occur? The environment must be constant and unchanging. All individuals in a population must have equal chances of survival There must be variation among individuals in a population All individuals in a population must have identical traitsarrow_forward
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