Genetics Exam Review 2019 Question Preview (ID: 47328)
Second Semester Exam 2019.
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Why is sicke cell anemia a mutation that is considered helpful and harmful to those who have the sickle cell gene.
a) it protects you from sickle disease but. 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) sickle cell disorder causes red blood cells to be abnormally shaped if you have the disease
d) all of the above
What is selective breeding?
a) the manipulation of an organism's genome
b) incomplete dominance
c) a type of genetic engineering that selects organisms to breed for a desired trait
d) all of the above
What is genetic engineering?
a) taking the genes on the train
b) the manipulation of an organism's genome or genes
c)
d)
What is it called when you have two dominant alleles expressed in the phenotype?
a) double dominant
b) monohybrid cross
c) incomplete dominance
d) codominance
Describe the structure of the DNA molecule.
a) Double helix, spiral ladder shape
b) looks like a large X
c) a four square
d) none of the above
What is is when the dominant allele does not completely cover up the recessive allele?
a) polygenetic inheritance
b) incomplete dominance
c) monohybrid cross
d) codominance
A mutation where a human has two color eyes
a) benefical
b) harmful
c) neutral
d)
What do we call the bands that are located on pairs of chromosomes?
a) genotypes
b) alleles
c) DNA
d) genes
A mutation that protects humans from malaria
a) beneficial
b) harmful
c) neutral
d) all of the above
A mutation that causes cancer
a) beneficial
b) harmful
c) neutral
d) all of the above
Sickle cell anemia disease
a) beneficial
b) harmful
c) neutral
d) none of the above
A mutation in a somatic cell that is repaired automatically
a) beneficial
b) harmful
c) neutral
d) none of the above
What is the cross that shows the inheritance of a single characteristic?
a) Punnett cross
b) dyhibrid cross
c) Chris cross
d) monohybrid cross
Why is it difficult to predict most traits in humans?
a) most traits are inherited
b) most traits are controlled by multiple alleles
c) most traits are not passed down form parents to offspring
d) none of the above
What is an inherited trait?
a) manipulating an offspring's genome
b) something that you learn like swimming
c) money and real estate
d) a trait that is passed down from parent to offspring
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