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Genetics Review-2019
Test Description: Review for quarterly
Instructions: Answer all questions to get your test result.
1) Which description best supports that squirrels are sexually reproducing organisms?
A
The breeding season for males and females varies from year to year.
B
They have a very thick coat of hair and can see extremely well.
C
Squirrels can reproduce at a couple months old.
D
The habitat of squirrels includes open grassy areas and trees
2) Some scientists claim the gene that controls the production of the proteins for fur color is located on a chromosome. Which of the following provides evidence to support the claim?
A
Other mammals with white fur have genes located in similar locations.
B
Some squirrels have this gene in a different location.
C
All squirrels with this gene have brown fur color.
D
The proteins for fur color is responsible for other traits in squirrels.
3) Some scientists claim the gene that controls the production of the proteins for fur color is located on a chromosome. Which of the following provides evidence to support the claim?
A
Other mammals with white fur have genes located in similar locations.
B
The proteins for fur color is responsible for other traits in squirrels.
C
Some squirrels have this gene in a different location.
D
A mutation in this gene may cause a variation of fur color.
4) If a white squirrel that lives in the woods in Odenton is born with this as a mutation, what prediction can be made about the mutation?
A
This mutation would be a harmful mutation because it would make the squirrel more visible to predators.
B
There is no way to determine if this mutation would be beneficial, harmful or have no effect at all.
C
This mutation would be neutral because fur color will not affect the survival of the squirrel.
D
This mutation would be beneficial because it would help the squirrel blend into the environment.
5) Chromosomes play an important role in variation because they _________________
A
release energy
B
regulate protein production
C
deliver information from the environment
D
none of the above
6) The main effect of a genetic mutation is to _________________.
A
reduce the life span of organisms
B
keep the genes the same
C
increase rate of reproduction
D
change a protein produced by the organism
7) What is true about squirrel reproduction?
A
. All offspring are identical genetically to each other.
B
They reproduce sexually because two parents contribute genetic material to the offspring.
C
. A set of identical chromosomes is passed on to the offspring
D
The offspring are always genetically identical to both of their parents.
8) What is true about squirrel reproduction?
A
The offspring are always genetically identical to both of their parents.
B
The offspring have genetic variation.
C
All offspring are identical genetically to each other.
D
A set of identical chromosomes is passed on to the offspring.
9) Explain how it is possible for two brown furred squirrels to have a white furred offspring?
A
If both parents are heterozygous.
B
If both parents are homozygous dominant.
C
If the parents have asexual reproduction.
D
If each offspring gets 100% of its genes from each parent.
10) Through the years, certain traits in watermelons were selectively bred by humans. Which of the following is true about selective breeding of watermelons?
A
The attractiveness of the fruit to wild animals has been artificially selected.
B
The traits of taste and seed size have been artificially selected in watermelons.
C
The traits of seed size and peel color have been artificially selected in watermelons.
D
The oval shape of the watermelon has been artificially selected.
11) Which of the following is the best example of artificial selection?
A
The most desirable traits were selected to reproduce.
B
Pollination by bees is part of the process of artificial selection.
C
Fruit with large seeds are difficult to reproduce.
D
Certain fruits may become unavailable because of disease.
12) By using gene therapy in fruits and vegetables, they will
A
Have a new defense against disease.
B
Not have anything to treat the diseases.
C
Be affected by other diseases.
D
Have an increased risk of disease.
13) Certain animal behaviors increase
A
food intake
B
reproductive success
C
mortality rate
14) How do animals help with plant reproduction?
A
They eat the seeds and poop them out elsewhere.
B
They camouflage themselves to the color of the plants.
C
They eat the leaves.
*select an answer for all questions
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