Multiple Choice
In the Hardy-Weinberg equation, p2 represents __________.
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22. Evolution of Populations
The Hardy-Weinberg Principle
Back22. Evolution of Populations
The Hardy-Weinberg Principle
- Multiple ChoiceIn a population in Hardy-Weinberg equilibrium, 1% of the individuals in a population show the recessive trait of a certain characteristic. In this situation, what is the value of p?1531views
- Multiple ChoiceIn the equation for Hardy-Weinberg equilibrium, 1 represents __________.1422views
- Multiple ChoiceApproximately 1 out of every 2,500 Caucasians in the United States is born with the recessive disease cystic fibrosis. According to the Hardy-Weinberg equilibrium equation, approximately what percentage of people are carriers?1422views1rank
- Multiple ChoiceIn a certain group of African people, 4% are born with sickle-cell disease (homozygous recessive). If this group is in Hardy-Weinberg equilibrium, what percentage of the group has the selective advantage of being more resistant to malaria (heterozygous) than those individuals who are homozygous for normal hemoglobin or for sickle-cell disease?2459views
- Multiple ChoiceAssume a population in Hardy-Weinberg equilibrium with these genotypic frequencies: AA = 0.25, Aa = 0.50, and aa = 0.25. If you remove all the homozygous dominants and allow the remaining population to reproduce (again under Hardy-Weinberg conditions), what will be the frequency of homozygous dominants in the next generation?2242views1comments
- Multiple ChoiceWhich of the following sets of conditions is required for Hardy-Weinberg equilibrium?1214views
- Multiple ChoiceHow does natural selection fashion organisms?1245views
- Multiple ChoiceConsider a gene that exists in two allelic forms in a simple Mendelian dominant/recessive pair. In a large population of randomly breeding organisms, the frequency of a recessive allele is initially 0.3. There is no migration and no selection. Humans enter this ecosystem and selectively hunt individuals showing the dominant trait. When the gene frequency is reexamined at the end of the year, __________.1188views1rank
- Textbook Question
What are the four nitrogenous bases found in RNA?
a. Cytosine, guanine, thymine, uracil (C, G, T, U)
b. Adenine, cytosine, guanine, thymine (A, C, G, T)
c. Adenine, cytosine, guanine, uracil (A, C, G, U)
d. Alanine, cysteine, glycine, threonine (A, C, G, T)
1610views - Textbook Question
In what sense is the Hardy–Weinberg principle a null hypothesis?
872views - Textbook Question
If the nucleotide variability of a locus equals 0%, what is the gene variability and number of alleles at that locus?
a. gene variability = 0%; number of alleles = 0
b. gene variability = 0%; number of alleles = 1
c. gene variability = 0%; number of alleles = 2
d. gene variability > 0%; number of alleles = 2
1571views - Textbook Question
There are 25 individuals in population 1, all with genotype AA, and there are 40 individuals in population 2, all with genotype aa. Assume that these populations are located far from each other and that their environmental conditions are very similar. Based on the information given here, the observed genetic variation most likely resulted from
a. Genetic drift.
b. Gene flow.
c. Nonrandom mating.
d. Directional selection.
2267views - Textbook Question
Single strands of nucleic acids are directional, meaning that there are two different ends. What functional groups define the two different ends of a strand?
2238views - Textbook Question
A fruit fly population has a gene with two alleles, A1 and A2. Tests show that 70% of the gametes produced in the population contain the A1 allele. If the population is in Hardy-Weinberg equilibrium, what proportion of the flies carry both A1 and A2?
a. 0.7
b. 0.49
c. 0.42
d. 0.21
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