Hypophosphatemia (Vitamin D-Resistant Rickets) Is Inherited As A Sex-Linked Dominant Trait.
Lesson 3 & 4 Exam Part 2
Question 1 2.5 / 2.5 points
Hypophosphatemia (vitamin D-resistant rickets) is inherited as a sex-linked dominant trait. The relevant gene is found on the X chromosome. What is the expected outcome of a cross between a homozygous recessive woman and a man with hypophosphatemia?
All of their daughters and none of their sons exhibit hypophosphatemia.
Fifty percent of their daughters and fifty percent of their sons exhibit hypophosphatemia.
All of their sons and none of their daughters exhibit hypophosphatemia.
Twenty-five percent of their offspring exhibit hypophosphatemia.
Question 2 2.5 / 2.5 points
In humans, the presence or absence of dimples is a trait controlled by a single gene. What is the genotype of an individual who is heterozygous for dimples?
Question 3 2.5 / 2.5 points
Which of these techniques could tell you how gene expression differs between individuals with and without cystic fibrosis?
Question 4 2.5 / 2.5 points
Which of these is most likely to cause the development of a six-legged frog?
Mutation of homeotic genes
Conversion of a proto-oncogene to an oncogene
Question 5 2.5 / 2.5 points
Which of the following turns off transcription by binding to the operator?
Question 6 2.5 / 2.5 points
The region of DNA where RNA synthesis begins is the:
Question 7 2.5 / 2.5 points
The absence of a terminator in transcription will result in:
the creation of a virus.
a strand of mRNA that lacks its cap and tail.
the production of a longer RNA molecule.
the production of a shorter RNA molecule.
Question 8 2.5 / 2.5 points
Which of the following enzymes is responsible for RNA synthesis?
Question 9 0 / 2.5 points
Reproductive cloning can:
reacquire the genes it lost during the course of development.
come from an early stage of embryonic development.
be implanted in the egg of an organism that is capable of regenerating lost body parts.
Question 10 2.5 / 2.5 points
A couple has two female children. What is the probability that their next child will be male?
Question 11 2.5 / 2.5 points
Where is translation accomplished?
Smooth endoplasmic reticulum
Question 12 2.5 / 2.5 points
In eukaryotic cells, repressor proteins inhibit transcription by binding to:
Question 13 2.5 / 2.5 points
A mating between a purebred purple-flowered pea plant and a purebred white-flowered pea plant would produce a(n):
Question 14 2.5 / 2.5 points
Which risk factors are associated with cancer of the colon and rectum?
Question 15 2.5 / 2.5 points
The __ is most commonly found in nature.
Question 16 2.5 / 2.5 points
Which of the following techniques is used to collect fetal cells during pregnancy for genetic testing?
Question 17 2.5 / 2.5 points
Transcription is the:
manufacture of a strand of RNA complementary to a strand of DNA.
manufacture of two new DNA double helices that are identical to an old DNA double helix.
modification of a strand of RNA prior to the manufacture of a protein.
manufacture of a protein based on information carried by RNA.
Question 18 2.5 / 2.5 points
More people die of __ cancer than of any other cancer.
Question 19 2.5 / 2.5 points
What is the ultimate source of all diversity?
Question 20 2.5 / 2.5 points
__ genes violate Mendel’s principle of independent assortment.
Lesson 3 & 4 Exam Part 1
Question 21 0 / 2.5 points
The Calvin cycle makes direct use of _ to make _.
light energy and CO2; sugar
CO2, ATP, and NADPH; sugar and O2
light energy, CO2, and water; sugar and O2
CO2, ATP, and NADPH; sugar
Question 22 2.5 / 2.5 points
What is the function of stomata?
Location of photosystems
Question 23 2.5 / 2.5 points
Which of the following is an autotroph?
Question 24 2.5 / 2.5 points
How many chromosomes does an individual with Turner syndrome have?
2n + 1
n + 1
2n – 1
n – 1
Question 25 2.5 / 2.5 points
What waste product do yeast produce under anaerobic conditions?
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