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Get genetics reviews and study guides here. Learn about genetics or brush up on your skills. Thorough explanations and practice examples will help you review biology.

Study Guides

showing 61 - 70 of 108
  • 61.

    Types of Gene Action Help

    Gene Action Alleles may interact with one another in a number of ways to produce variability in their phenotypic expression. The following models may help us understand various modes of gene action. With dominance lacking, i.e., ...

    Source: McGraw-Hill Professional
  • 62.

    Heritability Help

    Heritability One of the most important factors in the formulation of effective breeding plans for improving the genetic quality of crops and livestock is a knowledge of the relative contribution made by genes to the variability of a trait under consideration. The ...

    Source: McGraw-Hill Professional
  • 63.

    Selection Methods for Genetics Help

    Artificial vs. Natural Selection Artificial selection is operative when humans determine which individuals will be allowed to leave offspring (and/or the number of such offspring). Likewise, natural selection allows only those ...

    Source: McGraw-Hill Professional
  • 64.

    Mating Methods and Genetics Help

    Mating Methods—Random Mating Once the selected individuals have been chosen, they may be mated in various ways. The process known as "breeding" includes the judicious selection and mating of individuals for particular purposes.

    Source: McGraw-Hill Professional
  • 65.

    Quantitative Genetics Practice Problems

    Review the following concepts if needed: Qualitative vs. Quantitative Traits for Genetics

    Source: McGraw-Hill Professional
  • 66.

    Quantitative Genetics Practice Test

    Review the following concepts if needed: Qualitative vs. Quantitative Traits for Genetics

    Source: McGraw-Hill Professional
  • 67.

    Quantitative Genetics Practice Test

    Review the following concepts if needed: Qualitative vs. Quantitative Traits for Genetics

    Source: McGraw-Hill Professional
  • 68.

    Hardy-Weinberg Equilibrium Help

    Hardy-Weinberg Equilibrium If we consider a pair of alleles A and a, we will find that the percentage of gametes in the gene pool bearing A or a will depend upon the genotypic frequencies of the parental generation whose gametes ...

    Source: McGraw-Hill Professional
  • 69.

    Calculating Gene Frequencies Help

    Autosomal Loci with Two Alleles Dominant and Recessive Autosomal Alleles. A dominant phenotype may have either of two genotypes, AA or Aa, but we have no way (other than by laboriously testcrossing each ...

    Source: McGraw-Hill Professional
  • 70.

    Natural Selection and Evolution Help

    Natural Selection Genetic diversity in a population of eukaryotic organisms is mainly generated by three mechanisms: mutation, independent assortment of alleles, and recombination. Relative to a given environment, some of these genetic variants will be better able ...

    Source: McGraw-Hill Professional
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