Chapter 9 Final Study Guide

7 Questions | Total Attempts: 89

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Study Guide Quizzes & Trivia

This is chapter 9 final study guide for biology


Questions and Answers
  • 1. 
    Most genes come in alternative forms called_____. A diploid individual with two identical versions of a gene is said to be ____ while an individual with two different versions of a gene is said to be _____.
  • 2. 
    The genetic makeup of an organism is called its _____, whiel the physical traits of an organism are called its _____.
  • 3. 
    Edward was found to be heterozygous (Ss) for the sickle- cell trait. The alleles represented by the letters S and s are
    • A. 

      On the X and Y chromosomes

    • B. 

      Linked

    • C. 

      On homologous chromosomes

    • D. 

      Both present in each of Edward's sperm cell

  • 4. 
    Whether an allele is dominant or recessive depends on
    • A. 

      How common the allele is, relative to other alleles.

    • B. 

      Whether it is inherited from the mother or the father.

    • C. 

      Whether is or another allele determines the phenotype when both are present.

    • D. 

      Whether or not it is linked to other genes.

  • 5. 
    Two fruit flies with eyes of the usual red color are crossed, and their offspring are as follows: 77 red- eyed males, 152 red- eyed females. The gene that controls whether eyes are red r ruby is _____ and the allele for ruby is _____. 
  • 6. 
    All the offspring of a white hen and a black rooster are gray. The simplest explanation for this pattern of inheritane is
    • A. 

      Pleiotropy

    • B. 

      Sex linkage

    • C. 

      Codominance

    • D. 

      Incomplete dominance

  • 7. 
    A man who has type B blood and a woman who has type A blood could have children of which of the following phenotypes?
    • A. 

      A, B, or O

    • B. 

      AB only

    • C. 

      AB or O

    • D. 

      A, B, AB, or O

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