Bio 6D - Compare genetic variations in plants and animal (HOLT Ch. 8)
Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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The
passing of traits from parents to offspring is called a. | genetics. | c. | development. | b. | heredity. | d. | maturation. | | | | |
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2.
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The
difference between Mendel's experiments in the area of heredity and those done by earlier researchers
was that a. | earlier
researchers did not have microscopes. | b. | earlier researchers used detailed and numerical
procedures. | c. | Mendel expressed the results of his experiments in terms of
numbers. | d. | Mendel used pea plants with both purple and white
flowers. | | |
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3.
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The
“father” of genetics was a. | A. Knight | c. | Gregor Mendel. | b. | Hans
Krebs. | d. | None of the
above | | | | |
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4.
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Mendel obtained his P generation by allowing the plants to a. | self-pollinate. | c. | assort
independently. | b. | cross-pollinate. | d. | segregate. | | | | |
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5.
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F2 : F1 :: a. | P : F1 | c. | F1 : P. | b. | F1 :
F2 | d. | dominant trait :
recessive trait | | | | |
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6.
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Mendel's law of segregation states that a. | pairs of alleles
are dependent on one another when separation occurs during gamete
formation. | b. | pairs of alleles separate independently of one another after
gamete formation. | c. | each pair of alleles remains together when gametes are
formed. | d. | the two alleles for a trait separate when gametes are
formed. | | |
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7.
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Garden peas a. | are difficult to grow. | b. | mature
quickly. | c. | produce few offspring. | d. | are not good
subjects for studying heredity. | | |
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8.
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If an
individual possesses two recessive alleles for the same trait, the individual is said to
be a. | homozygous for
the trait. | c. | heterozygous for
the trait. | b. | haploid for the trait. | d. | mutated. | | | | |
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9.
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A
genetic trait that appears in every generation of offspring is called a. | dominant. | c. | recessive. | b. | phenotypic. | d. | superior. | | | | |
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10.
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An
individual heterozygous for a trait and an individual homozygous recessive for the trait are crossed
and produce many offspring that are a. | all the same genotype. | c. | of three different phenotypes. | b. | of two different
phenotypes. | d. | all the same
phenotype. | | | | |
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In humans, having freckles (F) is dominant to not having freckles (f).
The inheritance of these traits can be studied using a Punnett square similar to the one shown
below.
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11.
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Refer
to the illustration above. The parents shown in the Punnett square could have children with a
phenotype ratio of a. | 1:2:1. | c. | 3:1. | b. | 4:0. | d. | 2:2. | | | | |
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12.
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Refer
to the illustration above. Which box in the Punnett square represents a child who does not
have freckles? a. | box
1 | c. | box
3 | b. | box
2 | d. | box
4 | | | | |
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13.
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Refer
to the illustration above. The child in box 3 of the Punnett square has the genotype a. | FF. | c. | ff. | b. | Ff. | d. | None of the above | | | | |
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In rabbits, black fur (B) is dominant to brown fur (b).
Consider the following cross between two rabbits.
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14.
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Refer
to the illustration above. The device shown, which is used to determine the probable outcome of
genetic crosses, is called a a. | Mendelian box. | c. | genetic graph. | b. | Punnett
square. | d. | phenotypic
paradox. | | | | |
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15.
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What
is the expected phenotypic ratio resulting from a homozygous dominant ´ heterozygous
monohybrid cross?
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16.
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What
is the probability that the offspring of a homozygous dominant individual and a homozygous recessive
individual will exhibit the dominant phenotype?
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17.
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If a
characteristic is sex-linked, it a. | occurs most commonly in males. | c. | can never occur in females. | b. | occurs only in
females. | d. | is always
fatal. | | | | |
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18.
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A
diagram in which several generations of a family and the occurrence of certain genetic
characteristics are shown is called a a. | Punnett square. | c. | pedigree. | b. | monohybrid
cross. | d. | family
karyotype. | | | | |
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19.
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Which
of the following traits is controlled by multiple alleles in humans? a. | sickle cell
anemia | c. | hemophilia | b. | blood type | d. | Huntington's disease | | | | |
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20.
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What
would be the blood type of a person who inherited an A allele from one parent and an O
allele from the other? a. | type A | c. | type AB | b. | type
B | d. | type
O | | | | |
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21.
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A
change in a gene due to damage or being copied incorrectly is called a. | evolution. | c. | segregation. | b. | meiosis. | d. | a mutation. | | | | |
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22.
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Which
of the following describes hemophilia? a. | multiple-allele trait | c. | sex-linked trait | b. | dominant
trait | d. | codominant
trait | | | | |
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23.
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Both
sickle-cell anemia and hemophilia a. | are caused by genes coding for defective
protein. | b. | are seen in homozygous dominant
individuals. | c. | provide resistance to malaria
infections. | d. | are extremely common throughout the
world. | | |
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24.
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Genetic counseling is a process that a. | helps identify
parents at risk for having children with genetic defects. | b. | assists parents
in deciding whether or not to have children. | c. | uses a family
pedigree. | d. | All of the above | | |
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25.
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Which
of the following is an example of gene technology? a. | A genetic
counselor studies a pedigree. | b. | A student studies the colors of flowers in pea
plants. | c. | A geneticist explains the inheritance of albinism using a
Punnett square. | d. | A physician transfers a normal gene into the DNA of a person
with a genetic disease. | | |
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