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Punnett Square Practice

Quiz by Kristin Bullwinkle

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14 questions
Show answers
  • Q1
    The dominant allele (W) codes for long whiskers. The recessive allele (w) codes for short whiskers. What is the probability of producing offspring that have short whiskers from a cross of two long whiskered seals, one that is homozygous dominant & one that is heterozygous? What are the genotypes of the 2 parents in this example?
    Ww & Ww
    WW & Ww
    WW & WW
    ww & Ww
    30s
  • Q2
    The dominant allele (W) codes for long whiskers. The recessive allele (w) codes for short whiskers. What is the probability of producing offspring that have short whiskers from a cross of two long whiskered seals, one that is homozygous dominant & one that is heterozygous? What % of the offspring will have LONG whiskers?
    100%
    0%
    75%
    50%
    30s
  • Q3
    The dominant allele (W) codes for long whiskers. The recessive allele (w) codes for short whiskers. What is the probability of producing offspring that have short whiskers from a cross of two long whiskered seals, one that is homozygous dominant & one that is heterozygous? What % of the offspring will have SHORT whiskers?
    100%
    75%
    0%
    50%
    30s
  • Q4
    The dominant allele (W) codes for long whiskers. The recessive allele (w) codes for short whiskers. If one parent seal is a heterozygous long whisker and the other is short whiskered, what is the probability that the offspring will have LONG whiskers?
    0%
    100%
    50%
    75%
    30s
  • Q5
    The dominant allele (W) codes for long whiskers. The recessive allele (w) codes for short whiskers. If one parent seal is a heterozygous long whisker and the other is short whiskered, what is the probability that the offspring will have SHORT whiskers?
    50%
    25%
    100%
    75%
    30s
  • Q6
    In purple people eaters, one horn (H) is dominant and no horns (h) is recessive. Cross two hybrid purple people eaters. What are the genotypes of the 2 parents in this example?
    HH & HH
    Hh & Hh
    hh & hh
    Hh & HH
    30s
  • Q7
    In purple people eaters, one horn (H) is dominant and no horns (h) is recessive. Cross two hybrid purple people eaters. What are the possible genotypes of this cross?
    HH ONLY
    hh ONLY
    HH, Hh & hh
    HH & Hh ONLY
    30s
  • Q8
    In purple people eaters, one horn (H) is dominant and no horns (h) is recessive. Cross two hybrid purple people eaters. What are the possible PHENOTYPES of this cross?
    1 horn or no horn
    1, 2, or 3 horns
    2 horns or 1 horn
    no horns ONLY
    30s
  • Q9
    In cats, long hair (L) is dominant over short hair (l). Cross 2 short haired cats. What is the genotype of the 2 parents in this example?
    LL & LL
    ll & ll
    Ll & Ll
    30s
  • Q10
    In cats, long hair (L) is dominant over short hair (l). Cross 2 short haired cats. What is the probability that the parents will produce a short-haired kitten?
    50%
    0%
    25%
    100%
    30s
  • Q11
    In Noombats, yellow bellies (Y) are dominant over green bellies (y). Cross a purebred yellow bellied noombat & a noombat that is HYBRID for belly color. What are the 2 genotypes of the parents in this example?
    YY & Yy
    YY & YY
    yy & YY
    Yy & Yy
    30s
  • Q12
    In Noombats, yellow bellies (Y) are dominant over green bellies (y). Cross a purebred yellow bellied noombat & a noombat that is HYBRID for belly color. What % of the offspring will be yellow-bellied?
    0%
    75%
    50%
    100%
    30s
  • Q13
    In Noombats, yellow bellies (Y) are dominant over green bellies (y). Cross a purebred yellow bellied noombat & a noombat that is HYBRID for belly color. What % of the offspring are green bellied?
    50%
    25%
    100%
    0%
    30s
  • Q14
    Is it possible for two yellow bellied noombats to have a green bellied child? Identify the genotypes of the parents. Explain how and identify what the probability would be.
    YES; Yy & YY;25%
    YES; yy & yy ; 50%
    YES; Yy & Yy; 25%
    YES; YY & yy; 50%
    30s

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