Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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(1 point) A skin cell from a cow contains 80
chromosomes. How many chromosomes are found in new skin cells that develop as the cow grows?
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2.
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(1 point) A cat gets into a fight, and the tips of
both of its ears get torn off. If the cat has kittens later, how will this affect the shapes of
its kittens’ ears?
a. | It will have no effect on the ears of any of the kittens. | b. | Some of the
kittens’ ears will be missing the tips. | c. | All of the kittens’ ears will be missing
the tips. | d. | All of the kittens’ ears will be slightly
smaller. |
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3.
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(1 point) If a family has 3 girls and 1 boy what are
the odds that their next child would be a boy?
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4.
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(1 point) The combination Tt represents a ______
genotype.
a. | sex-linked | c. | heterozygous | b. | purebred | d. | homozygous |
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5.
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(1 point) In a Punnett square, a capital letter
stands for a ____ allele.
a. | recessive | c. | heterozygous | b. | dominant | d. | homozygous |
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6.
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(1 point) In sexually reproducing organisms, such as
humans, which of the following is TRUE about the sex cells in an individual human?
a. | The sex cells in an individual human contain the same number of DNA molecules as
other kinds of cells in that human's body. | b. | The sex cells in an individual human contain
double the number of DNA molecules as other kinds of cells in that human's
body. | c. | The sex cells in an individual human contain half the number of DNA molecules as
other kinds of cells in that human's body. | d. | The number of DNA molecules in the sex cells in
an individual human's body is different for different sex cells in that human’s
body. |
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7.
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(1 point) In some kinds of organisms, reproduction
occurs asexually (without the combining of two sex cells). Which of the following statements is TRUE
about the information that is passed in DNA from a parent to its offspring in these kinds of
organisms?
a. | The information that is identical in the DNA of a parent and in the DNA of its
offspring varies from organism to organism within the same species. | b. | Half of the
information in the DNA of a parent and the DNA of its offspring is identical. | c. | The information in
the DNA of a parent is completely different from the information in the DNA of its
offspring. | d. | The information in the DNA of a parent is identical to the information in the DNA of
its offspring. |
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8.
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(1 point) The study of inheritance is called
_____________________
a. | genetics | c. | inheritancology | b. | bioinheritance | d. | biology |
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9.
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(1 point) Which of the following represent a
homozygous recessive genotype?
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10.
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(1 point) Who was known as the father of
genetics?
a. | Gregor Freadhoff | c. | Albert Einstein | b. | Gregor Mendel | d. | Isaac Newton |
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Short Answer
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11.
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(1 point) You are looking at four tall pea plants.
What is their phenotype?___________________
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Fur length is an inherited trait in guinea pigs. Long fur is dominant (L) and
short fur is recessive (l). Both parents are both heterozygous.
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12.
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(2 points) Complete a punnett square for the
scenerio above.
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13.
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(2 points) Circle one of the offspring above and
tell the genotype ____________ and phenotype ______________.
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14.
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(2 points) What were the genotypes of the parents
that produced the punnett square below?
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15.
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(1 point) If a human baby has an X and Y chromosome,
is it male or female?
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16.
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(2 points) Complete a punnett square for the
following scenerio.
Dimples are dominate (D). No dimples is recessive (d). Dad is homozygous
dominant and mom is homozygous recessive.
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17.
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(3 points) In humans, widow’s peak allele is
dominant and the straight hairline allele is recessive.
Complete a punnett square predicting how
both parents with widow’s peak can have an offspring with the straight hairline trait.
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