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Genetics Exam Review 2019
Test Description: Second semester exam 2019
Instructions: Answer all questions to get your test result.
1) What is the cross that shows the inheritance of a single characteristic?
A
dyhibrid cross
B
Chris cross
C
monohybrid cross
D
Punnett cross
2) Why is it difficult to predict most traits in humans?
A
most traits are controlled by multiple alleles
B
none of the above
C
most traits are not passed down form parents to offspring
D
most traits are inherited
3) What is an inherited trait?
A
something that you learn like swimming
B
money and real estate
C
manipulating an offspring's genome
D
a trait that is passed down from parent to offspring
4) A mutation in a somatic cell that is repaired automatically
A
beneficial
B
none of the above
C
harmful
D
neutral
5) A mutation that protects humans from malaria
A
all of the above
B
neutral
C
harmful
D
beneficial
6) A mutation that causes cancer
A
beneficial
B
harmful
C
neutral
D
all of the above
7) Sickle cell anemia disease
A
harmful
B
neutral
C
none of the above
D
beneficial
8) A mutation where a human has two color eyes
A
benefical
B
neutral
C
harmful
9) What do we call the bands that are located on pairs of chromosomes?
A
genes
B
DNA
C
genotypes
D
alleles
10) Describe the structure of the DNA molecule.
A
looks like a large X
B
a four square
C
Double helix, spiral ladder shape
D
none of the above
11) What is is when the dominant allele does not completely cover up the recessive allele?
A
polygenetic inheritance
B
codominance
C
monohybrid cross
D
incomplete dominance
12) What is it called when you have two dominant alleles expressed in the phenotype?
A
codominance
B
incomplete dominance
C
monohybrid cross
D
double dominant
13) What is genetic engineering?
A
taking the genes on the train
B
the manipulation of an organism's genome or genes
14) What is selective breeding?
A
the manipulation of an organism's genome
B
a type of genetic engineering that selects organisms to breed for a desired trait
C
incomplete dominance
D
all of the above
15) Why is sicke cell anemia a mutation that is considered helpful and harmful to those who have the sickle cell gene.
A
sickle cell disorder causes red blood cells to be abnormally shaped if you have the disease
B
protects you form malaria but, causes red blood cells to be abnormally shaped if you have the disease
C
it protects you from sickle disease but. causes red blood cells to be abnormally shaped if you have the disease
D
all of the above
*select an answer for all questions
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