Biology 1010 Exam 2 Questions and Correct
Answers
Question 1
What is fitness?
Correct Answer
the ability of an individual to survive and reproduce in its specific environment
Question 2
How many chromosomes do humans have AFTER phase 1 of meiosis?
Correct Answer
23 (haploid)
Question 3
Can individuals evolve?
Correct Answer
No, only populations can
Question 4
What is divergent evolution?
Correct Answer
related species evolve in different directions and become increasingly different
Question 5
What is a gene?
Correct Answer
segment of DNA that codes for a protein/trait
Page 1 of 48
,Question 6
If a strand of RNA is CGUAUGGCC, what is its complementary DNA strand?
Correct Answer
GCATACCGG
Question 7
What happens during Telophase?
Correct Answer
Chromosomes uncoil, spindle fibers break down, nuclear envelope reforms
Question 8
What is the purpose of meiosis?
Correct Answer
produce gametes (sex cells)
Page 2 of 48
,Question 9
What happens during prophase?
Correct Answer
chromosomes condense, spindle fibers form, nuclear envelope dissolves
Question 10
What is oviparity?
Correct Answer
embryos develop in eggs (that are outside the mother- egg laying)
Question 11
Why do Okazaki fragments form?
Correct Answer
Okazaki fragments are formed since DNA polymerase reads DNA in 1 direction. This
means the leading strand can be replicated without breaks while the lagging strand
is replicated in fragments
Question 12
What does ligase do?
Correct Answer
joins Okazaki fragments
Page 3 of 48
, Question 13
Example of socially determined sex
Correct Answer
When female sea bass see a sharp decrease in the number of male sea base, some
females morphologically change into males
Question 14
If a cell has 5 chromosomes as a haploid how many would it have if it was diploid?
Correct Answer
10
Question 15
What are the phases of interphase?
Correct Answer
G1, S, G2
Question 16
What is an example of competition during sexual reproduction?
Correct Answer
penis fencing
Question 17
What is external fertilization?
Correct Answer
eggs shed by the female are fertilized by sperm in the external environment
Question 18
When does independent assortment happen?
Correct Answer
Metaphase 1 of meiosis
Page 4 of 48
Answers
Question 1
What is fitness?
Correct Answer
the ability of an individual to survive and reproduce in its specific environment
Question 2
How many chromosomes do humans have AFTER phase 1 of meiosis?
Correct Answer
23 (haploid)
Question 3
Can individuals evolve?
Correct Answer
No, only populations can
Question 4
What is divergent evolution?
Correct Answer
related species evolve in different directions and become increasingly different
Question 5
What is a gene?
Correct Answer
segment of DNA that codes for a protein/trait
Page 1 of 48
,Question 6
If a strand of RNA is CGUAUGGCC, what is its complementary DNA strand?
Correct Answer
GCATACCGG
Question 7
What happens during Telophase?
Correct Answer
Chromosomes uncoil, spindle fibers break down, nuclear envelope reforms
Question 8
What is the purpose of meiosis?
Correct Answer
produce gametes (sex cells)
Page 2 of 48
,Question 9
What happens during prophase?
Correct Answer
chromosomes condense, spindle fibers form, nuclear envelope dissolves
Question 10
What is oviparity?
Correct Answer
embryos develop in eggs (that are outside the mother- egg laying)
Question 11
Why do Okazaki fragments form?
Correct Answer
Okazaki fragments are formed since DNA polymerase reads DNA in 1 direction. This
means the leading strand can be replicated without breaks while the lagging strand
is replicated in fragments
Question 12
What does ligase do?
Correct Answer
joins Okazaki fragments
Page 3 of 48
, Question 13
Example of socially determined sex
Correct Answer
When female sea bass see a sharp decrease in the number of male sea base, some
females morphologically change into males
Question 14
If a cell has 5 chromosomes as a haploid how many would it have if it was diploid?
Correct Answer
10
Question 15
What are the phases of interphase?
Correct Answer
G1, S, G2
Question 16
What is an example of competition during sexual reproduction?
Correct Answer
penis fencing
Question 17
What is external fertilization?
Correct Answer
eggs shed by the female are fertilized by sperm in the external environment
Question 18
When does independent assortment happen?
Correct Answer
Metaphase 1 of meiosis
Page 4 of 48
