Biology Unit 7 Lesson 3 Distribution of Traits Quick Check Answers
1. Which of the following factors may contribute to a population maintaining Hardy-Weinberg equilibrium?
Answer - There are no mutations in the DNA of the population.
2. You are studying a population of penguins in Antarctica. Your DNA analysis of this population reveals that for the feather color pattern gene, 35 individuals are homozygous dominant, 35 individuals are heterozygous, and 30 individuals are homozygous recessive....etc...etc...
Answer - The recessive phenotype in this population may serve as an adaptation in this environment.
3. A scientist is studying the population of Cape Fox over four generations to determine if the population is in Hardy-Weinberg Equilibrium. Use the data below to determine if this population is in Hardy-Weinberg Equilibrium.
Answer - No, the population is not in Hardy-Weinberg Equilibrium because the frequencies of alleles have changed over the four generations.
4. Gene flow from one species to the genome of another by interbreeding between species is called
Answer - introgression.
5. In which of the following populations would you expect to find a change in allele frequencies from one generation to the next?
Answer - A population of turtles that routinely breeds with another closely related species of turtle.
100% Hope this helps!
To get the answers to the Biology Unit 7 Lesson 3 Distribution of Traits Quick Check, you have to analyze the information given and apply your knowledge of genetics and population genetics. Here is how you can arrive at the answers:
1. To determine which factor contributes to a population maintaining Hardy-Weinberg equilibrium, you need to recall the conditions for Hardy-Weinberg equilibrium. One of these conditions is the absence of mutations. Therefore, the correct answer is "There are no mutations in the DNA of the population."
2. For this question, you are given the distribution of individuals with different genotypes for a particular gene in a penguin population. To determine if the recessive phenotype may serve as an adaptation, you need to consider the environment. If the recessive phenotype provides some advantage or adaptation in the specific environment, then it is more likely to be maintained in the population. Therefore, the correct answer is "The recessive phenotype in this population may serve as an adaptation in this environment."
3. To determine if a population is in Hardy-Weinberg equilibrium, you need to compare the frequencies of alleles or genotypes across generations. If there are changes in allele frequencies over generations, then the population is not in Hardy-Weinberg equilibrium. In the given data, if you observe changes in allele frequencies over the four generations, the correct answer is "No, the population is not in Hardy-Weinberg Equilibrium because the frequencies of alleles have changed over the four generations."
4. The term for gene flow from one species to the genome of another by interbreeding between species is called "introgression."
5. To determine which population would show a change in allele frequencies from one generation to the next, it is important to consider the gene flow between populations. If there is interbreeding between populations or species, there can be an exchange of genetic material, leading to changes in allele frequencies. Therefore, the correct answer is "A population of turtles that routinely breeds with another closely related species of turtle."
Remember, understanding the concepts and principles behind the questions is crucial to arrive at the correct answers.