Genetics: Dominant and Recessive Alleles

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Questions and Answers

What is the total number of alleles in the population?

  • 220 (correct)
  • 110
  • 55
  • 440

How many alleles does each animal have for this gene?

  • 3
  • 4
  • 1
  • 2 (correct)

What is the purpose of calculating the total number of alleles?

  • To determine the number of animals in the population
  • To determine the number of each allele in the population (correct)
  • To determine the species of the animal
  • To determine the gene's function

What operation is performed to calculate the total number of alleles?

<p>Multiplication (D)</p> Signup and view all the answers

What is the significance of the number 110 in the calculation?

<p>The number of animals in the population (D)</p> Signup and view all the answers

What is the outcome of a recessive allele in a heterozygous Aa individual?

<p>It is not expressed, as the dominant allele overshadows it (A)</p> Signup and view all the answers

Which genotype is required for the recessive allele to be expressed?

<p>aa (B)</p> Signup and view all the answers

What is the relationship between the dominant and recessive alleles in a heterozygous Aa individual?

<p>The dominant allele overshadows the recessive allele (C)</p> Signup and view all the answers

In which situation would the recessive allele have no effect?

<p>When paired with a dominant allele in a heterozygous individual (C)</p> Signup and view all the answers

What is the role of the dominant allele in a heterozygous Aa individual?

<p>It masks the effect of the recessive allele (C)</p> Signup and view all the answers

How many A1 alleles are contributed by the 15 A1A1 animals?

<p>30 (A)</p> Signup and view all the answers

What is the total number of A2 alleles contributed by the A1A2 and A2A3 animals?

<p>36 (D)</p> Signup and view all the answers

How many A3 alleles are contributed by the A2A3 animals?

<p>30 (A)</p> Signup and view all the answers

What is the total number of A1 alleles?

<p>73 (C)</p> Signup and view all the answers

What is the total number of A2 alleles contributed by the A2A2 and A2A3 animals?

<p>40 (A)</p> Signup and view all the answers

What is the primary factor that influences the frequency of genetic traits in offspring?

<p>Frequency of genes in the parental population (A)</p> Signup and view all the answers

Which of the following is not a direct influence on the frequency of genetic traits in offspring?

<p>Environmental factors (A)</p> Signup and view all the answers

What is the role of the parental population in determining the frequency of genetic traits in offspring?

<p>Setting the frequency of genes in the offspring (D)</p> Signup and view all the answers

Why is the frequency of genetic traits in offspring dependent on the parental population?

<p>Because the offspring inherits genes from the parental population (B)</p> Signup and view all the answers

What is the relationship between the frequency of genes and the frequency of genetic traits in offspring?

<p>The frequency of genes determines the frequency of genetic traits (A)</p> Signup and view all the answers

What is another term for the movement of animals out of a breed?

<p>Emigration (D)</p> Signup and view all the answers

What type of movement leads to a decrease in population size?

<p>Emigration (D)</p> Signup and view all the answers

What is the term for the movement of animals out of a breed or population?

<p>Emigration (A)</p> Signup and view all the answers

What is the result of emigration on a population size?

<p>A decrease in population size (B)</p> Signup and view all the answers

Why is emigration important in a population?

<p>To regulate population size (C)</p> Signup and view all the answers

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