# Genetics: Question Preview (ID: 11477)

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Punnett squares can be used to predict the probability of: |
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a) being exposed to a contagious disease and contracting it | b) neither of the above | c) both of the above | d) having an inherited disease or a genetically determined physical trait | |

If two people who are both carriers for a genetically inherited fatal recessive disease decide to become parents, what will be the odds that their children will also be carriers? |
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a) 1 out of 4 | b) 4 out of 4 | c) 3 out of 4 | d) 2 out of 4 | |

If a woman is homozygous normal and her husband is heterozygous for a recessive disease and they decide to become parents, what is the probability that their child will be healthy? |
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a) 1 out of 4 | b) 4 out of 4 | c) 3 out of 4 | d) 2 out of 4 | |

One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). What is the probability of one of their offspring having long hair |
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a) 100% | b) 25% | c) 50% | d) 75% | |

If two parents are heterozygous for a genetically inherited dominant trait, what is the probability that they will have a child together who has this trait in his or her phenotype? |
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a) 100% | b) 25% | c) 50% | d) 75% | |

One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring being red? |
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a) 100% | b) 25% | c) 50% | d) 75% | |

One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring being white . |
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a) 100% | b) 25% | c) 50% | d) 75% | |

In a certain species of plant, the color purple (P) is dominant to the color white (p). What is the probability of purple offspring from PP x Pp? |
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a) 100% | b) 0% | c) 25% | d) 75% | |

In a certain species of pine trees, short needles (S) are dominant to long needles (s). What is probability of long needles with Ss x ss? |
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a) 100% | b) 0% | c) 50% | d) 75% | |

If two parents are heterozygous for a genetically inherited dominant trait, what is the probability that they will have a child together who has this trait in his or her phenotype? |
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a) 100% | b) 75% | c) 50% | d) 0% | |

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