CH 5: Sex-linked inheritance: Blood Grouping
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Questions and Answers

Which blood type results from co-dominance between the alleles IA and IB?

  • Blood type AB (correct)
  • Blood type B
  • Blood type O
  • Blood type A

    • What is the blood type expressed when an individual has the genotype II?

  • Blood type O (correct)
  • Blood type B
  • Blood type A
  • Blood type AB

    • Which blood type demonstrates complete dominance of the allele IB?

  • Blood type A
  • Blood type O
  • Blood type B (correct)
  • Blood type AB

    • What blood type results from two parents with genotypes IBi each?

    <p>Blood type O</p> Signup and view all the answers

    In the context of blood grouping alleles, what does it mean for alleles to be co-dominant?

    <p>Both alleles are equally expressed in the phenotype</p> Signup and view all the answers

    Why are blood groups not conclusive evidence in paternity testing?

    <p>The shared commonality of blood types in the population</p> Signup and view all the answers

    What genotype results in a blood group O phenotype?

    <p>ii</p> Signup and view all the answers

    In dihybrid crosses, what principle states that alleles of different genes separate independently during gamete formation?

    <p>Mendel's Law of Independent Assortment</p> Signup and view all the answers

    What are the possible genotypes of the gametes for a parent with the genotype TtPp?

    <p>TP, Tp, tP, and tp</p> Signup and view all the answers

    How many squares are there in a Punnett square used for dihybrid crosses?

    <p>16</p> Signup and view all the answers

    What is the phenotype ratio when crossing a heterozygous black, homozygous rough hamster with a heterozygous black, heterozygous rough hamster?

    <p>9 black rough: 3 black smooth: 3 white rough: 1 white smooth</p> Signup and view all the answers

    If you cross two pea plants with genotypes TtPP and TtPp, what is the chance of getting a plant with genotype TtPp?

    <p>$\frac{1}{2}$</p> Signup and view all the answers

    What does the Punnett square help determine in genetics?

    <p>Offspring genotypes</p> Signup and view all the answers

    What does Mendel's Law of Independent Assortment apply to?

    <p>Dihybrid crosses only</p> Signup and view all the answers

    What is the blood type of an individual with the genotype IAIB?

    <p>Blood type AB</p> Signup and view all the answers

    If an individual has the genotype ii, what blood type will they express?

    <p>Blood type O</p> Signup and view all the answers

    In the ABO blood group system, what is the genotype of an individual with blood type B?

    <p>IBIB</p> Signup and view all the answers

    Which statement best describes the inheritance pattern of blood types in humans?

    <p>Codominance of IA and IB</p> Signup and view all the answers

    If two parents have the genotypes IAi and IBi, what is the probability they will have a child with blood type AB?

    <p>~25%</p> Signup and view all the answers

    When considering blood group alleles, which combination results in a phenotype that masks the presence of the other alleles?

    <p>(IA, IA)</p> Signup and view all the answers

    What is the probability that a child born to parents with genotypes IAi and IBi will have blood type O?

    <p>~0%</p> Signup and view all the answers

    Which scenario can result in a child with blood type O?

    <p>Parent 1: IAi , Parent 2: ii</p> Signup and view all the answers

    What does the phenotype of an individual with genotype IBi depict?

    <p>Blood type B</p> Signup and view all the answers

    What does the genotype TtPp represent in a dihybrid cross involving Mendel’s pea plants?

    <p>A heterozygous tall and purple plant</p> Signup and view all the answers

    If two parent hamsters with genotypes BbRR and BbRr are crossed, what are the possible genotypes of the offspring?

    <p>BbRR, BbRr, Bbrr, BBRR, BBRr, BBrr</p> Signup and view all the answers

    In a dihybrid cross involving two pea plants with genotypes TTPP and ttpp, what is the phenotype ratio of the offspring?

    <p>9 tall with purple flowers : 3 short with purple flowers : 3 tall with white flowers : 1 short with white flowers</p> Signup and view all the answers

    What is the significance of the Law of Independent Assortment in dihybrid crosses?

    <p>It explains how alleles for different genes segregate independently during gamete formation</p> Signup and view all the answers

    How many types of gametes can be produced by a parent with the genotype AaBbCC?

    <p>16</p> Signup and view all the answers

    In a dihybrid cross involving Mendel's pea plants, what is the expected genotype ratio of the offspring when crossing two parents both with genotype TtPp?

    <p>1 TT : 2 Tt : 1 tt : 1 PP : 2 Pp : 1 pp</p> Signup and view all the answers

    What would be the genotype of a hamster offspring resulting from a cross between a black coat dominant (B) hamster and a white coat recessive (b) hamster?

    <p>Bb</p> Signup and view all the answers

    How do genes segregate during gamete formation according to Mendel's Law of Independent Assortment?

    <p>Alleles on the same chromosome segregate independently</p> Signup and view all the answers

    What is the possible phenotype of a hamster offspring resulting from a cross between a rough coat dominant (R) hamster and a smooth coat recessive (r) hamster?

    <p>'Smooth' or 'rough' coat depending on dominance relationship</p> Signup and view all the answers

    What would be the possible genotype of an offspring resulting from crossing a heterozygous black, homozygous rough hamster with a homozygous black, heterozygous rough hamster?

    <p>BBRr</p> Signup and view all the answers

    What does it mean if an individual has the genotype IBi for blood group alleles?

    <p>They have blood type B</p> Signup and view all the answers

    In the ABO blood group system, which genotype pair results in a phenotype where both alleles are expressed equally?

    <p>IAIB</p> Signup and view all the answers

    If both parents have blood type A, what is the probability they will have a child with blood type O?

    <p>25%</p> Signup and view all the answers

    Which combination of alleles would result in an individual expressing complete dominance for blood type B?

    <p>IBIB</p> Signup and view all the answers

    If two parents with blood type AB have a child, what is the probability the child will also have blood type AB?

    <p>100%</p> Signup and view all the answers

    For an individual with the genotype IAIB, what would be the expected blood type phenotype?

    <p>AB</p> Signup and view all the answers

    If an individual has the genotype ii for blood group alleles, what blood type will they express?

    <p>O</p> Signup and view all the answers

    If a parent has genotype IAi and the other parent has genotype IBi, what is the probability that they will have a child with blood type O?

    <p>50%</p> Signup and view all the answers

    What would be the expected phenotype of an individual who has the genotype IBi?

    <p>Blood type B</p> Signup and view all the answers

    What would be the genotype of a hamster offspring resulting from a cross between a homozygous black, homozygous rough hamster and a homozygous black, heterozygous rough hamster?

    <p>BBRr</p> Signup and view all the answers

    In the context of dihybrid crosses, what is the phenotype ratio of the offspring when crossing a homozygous black, homozygous rough hamster with a heterozygous black, homozygous rough hamster?

    <p>9 black &amp; rough : 3 black &amp; smooth : 3 white &amp; rough : 1 white &amp; smooth</p> Signup and view all the answers

    If a parent hamster has the genotype BbRr, how many different types of gametes can it produce?

    <p>16</p> Signup and view all the answers

    What is the expected phenotypic ratio when crossing two pea plants with genotypes TTpp and TtPp?

    <p>9 tall &amp; purple : 3 tall &amp; white : 3 short &amp; purple : 1 short &amp; white</p> Signup and view all the answers

    When considering two pea plants with genotypes TtPp and TtPP, what is the probability of getting an offspring with genotype TtPp?

    <p>$\frac{3}{4}$</p> Signup and view all the answers

    If you cross two parents with genotypes TtPp and TTPP, what is the chance of having an offspring with genotype TtPP?

    <p>$\frac{1}{4}$</p> Signup and view all the answers

    What is the genotype of an offspring when a parent with genotype TtPp is crossed with a parent having genotype Ttpp?

    <p>$\frac{1}{2}$ TtPp : $\frac{1}{2}$ Ttpp</p> Signup and view all the answers

    In a dihybrid cross involving pea plants with genotypes TTRR and TtRr, what is the probability of getting an offspring with genotype TtRR?

    <p>$\frac{6}{16}$</p> Signup and view all the answers

    When two parents with genotypes AaBb and AAbb are crossed, what is the probability of having a child with genotype AaBb?

    <p>$\frac{1}{4}$</p> Signup and view all the answers

    If a parent with genotype BBrr is crossed with a parent having genotype BbRr, what is the probability of getting an offspring with genotype BbRr?

    <p>$\frac{3}{4}$</p> Signup and view all the answers

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