Quarterly Review Question Preview (ID: 28078)


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A man lifts weights and exercises until he is very muscular. He works out with the hope that his children will also be strong. A problem with his idea is that
a) characteristics acquired during one's lifetime cannot be passed to offspring.
b) not all offspring may want to be that strong.
c) no problem. The statement is true.
d) They will be strong later in life, but not as babies.

Which trait provides genetic variation in a flower population?
a) Flowers with twice the normal number of petals
b) Flowers that have been dyed blue
c) Flowers that have been cut
d) None of the above

There are green and brown moths in the forest. The brown moths are seen more quickly and are eaten by the birds. Green moths survive in the forest because:
a) their coloring makes them better adapted to the forest than brown moths
b) they fly faster than brown moths.
c) both a and b
d) none of the above

A population of birds eats green moths. Every so often the green moths have a brown offspring. The brown moths are easier to see and are less likely to survive. This is called:
a) evidence
b) variation
c) mutation
d) natural selection

A paleontologist is most likely to study
a) drug treatments
b) fossils
c) viruses
d) dog breeding

Which of these could cause the extinction of a species?
a) environmental change
b) loss of food source
c) disease
d) all of the above

Diversity of species refers to the idea that
a) there are many different types of organisms.
b) Organisms can be classified
c) not every individual in a species is identical
d) organisms of the same species share the same species name.

The masked or hidden trait is called
a) recessive
b) dominant
c) shy
d)

If an alien is heterozygous for blue hair, then her genotype is
a) BB
b) Bb
c) bb
d)

If a creature is homozygous for green fingernails, then his genotype would be
a) gg
b) Gg
c) Yy
d)

If both mother and father are HOMOZYGOUS dominant for brown eyes, what is the chance that their child would be born with blue eyes?
a) 0%
b) 25%
c) 50%
d) 75%

In mussels the brown allele (B) is dominant over blue (b). In which cross will ALL tthe offspring be brown?
a) BB x bb
b) Bb x Bb
c) Bb x bb
d) bb x bb

In tomato plants, red (R) fruit color dominates yellow (r). Use the Punnett square to determine the phenotypes.
a) all red
b) all yellow
c) all orange
d) most are red, some are yellow

In guinea pigs black fur (B) is dominant over gray (b). Two black pigs are mated. One is homozygous and one is heterozygous. What is the percentage of GRAY offpring?
a) 0%
b) 25%
c) 50%
d) 75%

Which of these could describe a mutation?
a) long beaked birds having long beaked offspring
b) striped cats have striped offspring
c) beige worms have beige offspring
d) hornless cows have calves with horns.

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