QCE 2 2014 Test B: Question Preview (ID: 22611)


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Which of the following shows an increase in complexity of the levels of organization in living things?
a) cells, tissues, organisms, organs, and systems b) cells, tissues, organs, systems, and organisms c) tissues, cells, organs, organisms, and systems d) tissues, organs, cells, systems, and organisms
Multicellular organisms are composed of cells that vary in appearance. What is the most likely reason cells in organisms have different shapes?
a) to work at similar rates b) to perform similar roles c) to work at different rates d) to perform different roles
Which statement about DNA is correct?
a) a child's DNA will be unrelated to the mother's or father's DNA b) a child's DNA will show similarities to both the mother's and father's DNA c) a female child's DNA will exactly match the mother's DNA d) a male child's DNA will exactly match the father's DNA
Mutations within a DNA sequence are
a) natural processes that produce genetic diversity b) natural processes that always affect the phenotype c) unnatural processes that always affect the phenotype d) unnatural processes that are harmful to genetic diversity
Which of the following is an example of codominance in genetic traits?
a) a tall pea plant and a short pea plant produce a tall pea plant b) an orange cat and a black cat produce an orange-and-black kitten c) a blue-eyed man and a brown-eyed woman produce a blue-eyed child d) a color-blind woman and a man with normal vision produce a color-blind son
In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between a heterozygous plant and a homozygous oval plant, what percentage of the offspring will have round seeds?
a) 100% b) 75% c) 50% d) 25%
In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two homozygous round plants, what percentage of the offspring will have round seeds?
a) 100% b) 75% c) 50% d) 25%
In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two heterozygous plants, what percentage of the offspring will have oval seeds?
a) 100% b) 75% c) 50% d) 25%
The inheritance of a trait in humans is best described as being determined by
a) a single allele b) one or more pairs of alleles c) one pair of chromosomes d) the sex chromosomes of the offspring
In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two heterozygous plants, what percentage of the offspring will have round seeds?
a) 100% b) 75% c) 50% d) 25%
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