True/False Indicate whether the statement is true or
false.
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1.
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One would find the gene for flower color in pea plants in the same exact
location on the female’s chromosome as on the male’s chromosome.
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Multiple Choice Identify the choice that best completes the
statement or answers the question.
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2.
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What did Gregor Mendel do in his genetics experiments?
a. | He cross-pollinated pea plants by brushing pollen from one flower to
another. | b. | He studied asexual plants. | c. | He cross-pollinated both plants and
animals. |
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3.
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Which term refers to physical characteristics that are studied in
genetics?
a. | traits | b. | offspring | c. | generations |
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4.
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Factors that control traits are called
a. | purebreds. | b. | parents. | c. | genes. |
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5.
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The different forms of a gene are called
a. | alleles. | b. | masks. | c. | factors. |
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6.
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When Mendel crossed a purebred tall pea plant with a purebred short pea
plant,
a. | one fourth of the offspring in the F1 generation were short | b. | all of the offspring
in the F1 generation were tall. | c. | three fourths of the offspring in the F1
generation were tall |
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7.
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Which of the following best expalins Mendel’s observations that traits in
pea plants came in two forms.
a. | offspring are always hybrids | c. | chromosomes only hold 2 genes
each | b. | because plants are the product of two different
parents |
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8.
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If an allele always shows up in an organism’s phenotype, it is said to
be
a. | a mutation | c. | recessive | b. | dominant |
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9.
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Scientists call an organism that has two different alleles for a trait a
a. | trait. | b. | purebred. | c. | hybrid. |
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10.
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What does the notation AA mean to geneticists?
a. | two dominant alleles | b. | one dominant and one recessive
allele | c. | heterozygous alleles |
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11.
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What does the notation Aa mean to geneticists?
a. | one dominant allele and one recessive allele | b. | two dominant
alleles | c. | homozygous alleles |
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12.
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The phenotype of a pea plant that has the alleles TT is
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13.
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The phenotype of a pea plant with the alleles Tt is
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14.
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The phenotype of a pea plant with the alleles tt is
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15.
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The genotype of a homozygous tall pea plant is
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16.
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The genotype of a heterozygous tall pea plant is
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17.
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The difference between a purebred tall pea plant and a hybrid tall pea plant
is
a. | hybrids are always shorter | c. | purebreds have two alleles that are
the same and hybrids have two different alleles. | b. | purebreds are
healthier |
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18.
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Genes are found in
a. | cell cytoplasm | c. | chromosomes | b. | cell membranes |
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19.
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A heterozygous blue creature is crossed with a homozygous orange creature. Which
is dominant?
a. | Blue | c. | neither is dominant | b. | Orange |
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20.
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Who gets credit for founding the science of genetics?
a. | the greeks | c. | Robert Hooke | b. | Gregor Mendel |
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21.
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Parents produce cells that contain half the number of chromosomes because
a. | cells clone themselves | c. | body cells need only half the number of
chromosomes | b. | a haploid sex cell from each parent combine to create a
zygote |
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