Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
6th Edition
ISBN: 9780134555430
Author: Colleen Belk, Virginia Borden Maier
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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Which 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.
Which of the following best differentiates between genotype and phenotype?
Genotype is an organism's genetic makeup, and phenotype is the observable traits of an organism
Genotype is the observable traits of an organism, and phenotype is an organism's genetic makeup
Genotype and phenotype both refer to an organism's genetic makeup
Genotype and phenotype both refer to the observable traits of an organism
Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. However, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. In light of this example and others that you might be aware of, what can you conclude about particular alleles such as the allele for albinism?
Any allele that leads to an abnormal phenotype will be rare in most populations but common in Native American populations.
Alleles that produce abnormal phenotypes are never beneficial.
An allele that leads to an abnormal phenotype may be beneficial in some environments but harmful in others.
An allele that leads to an abnormal phenotype will rise in frequency after many generations.
An allele that leads to an abnormal phenotype will soon disappear from a population.
Chapter 13 Solutions
Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
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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