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Bio1510W12 Exam 4 w ans v w.wiz.doc
Bio1510W12_Exam_4_w_ans_v_w.wiz.doc
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Bio1510W12 Exam 4 w ans v w.wiz.doc-A non-Mendelia...
Bio1510W12_Exam_4_w_ans_v_w.wiz.doc-A non-Mendelian pleiotropic gene *a. affects
Bio1510W12 Exam 4 w ans v w.wiz.doc...
Bio1510W12_Exam_4_w_ans_v_w.wiz.doc-A non-Mendelian pleiotropic gene *a. affects
Page 5
22. Which of the following statements about RNA splicing is TRUE?
a. It always occurs in the cytoplasm.
b. It removes the exons so they can be degraded.
c. All of these choices are true.
*d. It shortens the RNA molecule.
e. It is performed by the ribosome.
23. If an individual has one dominant allele and one recessive allele
for a characteristic, then for their genotype for that characteristic
they are
*a. heterozygous.
b. dominant.
c. anueploid.
d. homozygous.
e. recessive.
24. Assume Mendelian inheritance for this question. You have 1000
plants in an
F
2
generation from a monohybrid cross of a true-breeding
dominant yellow-pea plant to a true-breeding recessive green-pea plant.
How many of the
F
2
plants would you predict will be homozygous?
a. 1000
*b. 500
c. 250
d. 750
e. none
25. What is the physical basis for the segregation of alleles when
gametes are formed?
a. separation of the two strands of DNA during DNA replication
b. the formation of chiasmata during the first meiotic division
*c. separation of homologous chromosomes during anaphase I
followed by separation of sister chromatids during anaphase II
d. separation of sister chromatids during anaphase I followed by
separation of homologous chromosomes during anaphase II
e. crossing over during prophase I
26. Assume Mendelian inheritance for this question. You have 1000
plants in an
F
2
generation from a monohybrid cross of a true-breeding
dominant yellow-pea plant to a true-breeding recessive green-pea plant.
How many of the
F
2
plants would you predict are true-breeding yellow-
pea plants?
a. 750
Page 6
*b. 250
c. 500
d. 1000
e. none
27. Which of the following is the protein that has a
concentration
that changes as the cells go through the mitotic cell cycle?
a. All of the other answers are correct.
b. growth factor receptors
c. cdc2
*d. cyclin
e. glucose
28. Assume Mendelian inheritance for this question. You have 1000
plants in an
F
1
generation from a monohybrid cross of a true-breeding
dominant yellow-pea plant to a true-breeding recessive green-pea plant.
How many of the
F
1
plants would you predict are true-breeding green-pea
plants?
a. 250
*b. none
c. 1000
d. 500
e. 750
29. What amino acid sequence would result from the mRNA sequence AUG-
CUG-ACC-GCG?
a. Met-Val-Ala-Thr
b. Met-Ala-Val-Ser
c. Met-Leu-Pro-Pro
*d. Met-Leu-Thr-Ala
e. Met-Phe-Ser-Ala
30. Which of the following synthesizes the daughter strands during DNA
replication?
a. topoisomerase
b. DNA primase
c. helicase
d. RNA polymerase
*e. DNA polymerase
31. A single strand of DNA
a. has two 3’ ends.
b. has two 5’ ends.
c. makes a double helix.
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