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Matty0132
wrote...
4 years ago
Question 1    
If each parent can produce 100 genetically distinct gametes, how many genetically distinct offspring can two parents produce?

   A.    200
   B.    100
   C.    1,000
   D.    10,000
   E.    1,000,000

Question 2
     In carrying out his breeding studies, Mendel examined characters that had which of the following properties?

   A.    The characters each were controlled by a single gene.
   B.    They were controlled by loci that were (or behaved as if they were) on different chromosomes.
   C.    It was possible to isolate true-breeding varieties for each trait.
   D.    The traits varied in an either-or-fashion.
   E.    All of the above.

Question 3   
     Assume tall (T) is completely dominant to dward (t). If a homozygous dominant individual is crossed with a homozygous dwarf, the offspring will _____________.

   A.    all be intermediate in height
   B.    all be short
   C.    all be tall
   D.    be 1/2 tall and 1/2 dwarf
   E.    be 3/4 tall and 1/4 dwarf

Question 4
     The F1 generation differed from the F2 in Mendel's experiments in that _________________.

   A.    all of the F1 showed the dominant phenotype, and all of the F2 showed the recessive phenotype
   B.    none of the F1 showed the dominant phenotype, but one-half of the F2 did
   C.    all of the F1 showed the dominant phenotype, whereas only half of the F2 did
   D.    all of the F1 showed the dominant phenotype, but only three-fourths of the F2 did
   E.    one-half of the F1 showed the dominant phenotype, and three-fourths of the F2 did

Question 5
     In which genetic testing procedure would a physician remove a tiny tissue sample from the placenta?

   A.    amniocentesis
   B.    fetoscopy
   C.    chorionic villus sampling
   D.    ultrasound
   E.    none of the above

Question 6
     Heart disease, diabetes, cancer, alcoholism, and many mental illnesses can best be described as _______________.

   A.    the symptoms of Huntington's disease
   B.    simple Mendelian disorders
   C.    multifactorial disorders with a possible polygenic component
   D.    infectious diseases caused by microorganisms
   E.    the results of a bad lifestyle

Question 7
     Homologous pairs of chromosomes often _____________.

   A.    are not both present in dipoid somatic cells
   B.    contain different alleles
   C.    carry different genes for different traits
   D.    differ in length
   E.    are paired up in the G2 phase of the cell cycle

Question 8 
     A woman with type O blood is expecting a child. Her husband is type A. Both the woman's father and her husband's father had type B. What is the probability that the child will have type O blood?

   A.    50%
   B.    25%
   C.    0%
   D.    75%
   E.    100%

Question 9
      If a plant is true-breeding for a dominant trait, then _____________.

   A.    if the plant were allowed to self-pollinate, the dominant and recessive traits would consistently appear in a 3:1 ratio among the progeny
   B.    the variety is immune to mutation
   C.    if the plant were allowed to self-pollinate, all of the progeny would have the dominant trait
   D.    if the plant were crossed with a heterozygote, one-half of the progeny would show the dominant trait, and one-half would the recessive trait
   E.    the plant is heterozygous for the trait

Question 10 
     If a heterozygous plant is allowed to self-pollinate, what proportion of the offspring will also be heterozygous?

   A.    1/4
   B.    1/3
   C.    2/3
   D.    1/2
   E.    all of them


Thank you in advance.
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4 years ago
If each parent can produce 100 genetically distinct gametes, how many genetically distinct offspring can two parents produce?

   A.    200
   B.    100
   C.    1,000
  D.    10,000
   E.    1,000,000

Question 2
     In carrying out his breeding studies, Mendel examined characters that had which of the following properties?

   A.    The characters each were controlled by a single gene.
   B.    They were controlled by loci that were (or behaved as if they were) on different chromosomes.
   C.    It was possible to isolate true-breeding varieties for each trait.
   D.    The traits varied in an either-or-fashion.
   E.    All of the above.

Question 3   
     Assume tall (T) is completely dominant to dward (t). If a homozygous dominant individual is crossed with a homozygous dwarf, the offspring will _____________.

   A.    all be intermediate in height
   B.    all be short
   C.    all be tall
   D.    be 1/2 tall and 1/2 dwarf
   E.    be 3/4 tall and 1/4 dwarf

Question 4
     The F1 generation differed from the F2 in Mendel's experiments in that _________________.

   A.    all of the F1 showed the dominant phenotype, and all of the F2 showed the recessive phenotype
   B.    none of the F1 showed the dominant phenotype, but one-half of the F2 did
   C.    all of the F1 showed the dominant phenotype, whereas only half of the F2 did
   D.    all of the F1 showed the dominant phenotype, but only three-fourths of the F2 did
   E.    one-half of the F1 showed the dominant phenotype, and three-fourths of the F2 did

Question 5
     In which genetic testing procedure would a physician remove a tiny tissue sample from the placenta?

   A.    amniocentesis
   B.    fetoscopy
   C.    chorionic villus sampling
   D.    ultrasound
   E.    none of the above

Question 6
     Heart disease, diabetes, cancer, alcoholism, and many mental illnesses can best be described as _______________.

   A.    the symptoms of Huntington's disease
   B.    simple Mendelian disorders
   C.    multifactorial disorders with a possible polygenic component
   D.    infectious diseases caused by microorganisms
   E.    the results of a bad lifestyle
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