Any answers help! 3. Population thinking assumes that: a. variation is a problem

Question

Any answers help!

3. Population thinking assumes that:
a. variation is a problem and the mean is the goal of biological description
b. variation is what tree building is based on
c. variation is the goal of biological description
d. the mean value of a trait for a population is real
e. none of the above

4. If the color of the face of birds in a population is controlled by a dominant - recessive allelic system and there are two alleles in the population, how many genotypes are possible?
a. one
b. two
c. three
d. four
e. six

5. If 9% of a population are afflicted with a recessive disorder and there are only two alleles at the locus for this disorder, then what is the frequency of homozygous non-carriers in the population?
a. 0.3
b. 0.7
c. 0.42
d. 0.49
e. 0.21

6. A bottleneck:
A) Has the same impact as natural selection
B) Occurs when population size constricts to very small sizes
C) Always happens randomly
D) Is not related to a founder effect
E) Happens after a population constriction

8.  Which of the following did the framers of the modern synthesis not use in formulating this synthesis?

a. populations as unit of evolution

b. gradualism of change 

c. the central role of natural selection

d. inbreeding changes allele frequencies

e. they used all of the above

9.  Natural selection does not necessarily produce perfect organisms.  Which of the following does not belong in the list as reasons for this?

a. existence of historical constraints

b. the compromise nature of adaptations

c. inbreeding

d. the occurrence of genetic drift

e. new alleles do not arise on demand

10.  The major difference between scala naturae and tree thinking is:

a.  scala naturae uses only morphology and tree thinking uses only molecules

b.  scala naturae describes only animal evolution and tree thinking describes only plant evolution

c.  scala naturae doesn't use implied ancestors and tree thinking does

d.  scala naturae implies that we all arose from a common ancestor and tree thinking disreagards ancestry

 e.  none of the above

Explanation / Answer

3. Population thinking assumes that: c. variation is the goal of biological description 4. If the color of the face of birds in a population is controlled by a dominant - recessive allelic system and there are two alleles in the population, how many genotypes are possible? c. three 5. If 9% of a population are afflicted with a recessive disorder and there are only two alleles at the locus for this disorder, then what is the frequency of homozygous non-carriers in the population? e. 0.21 6. A bottleneck: B) Occurs when population size constricts to very small sizes 8. Which of the following did the framers of the modern synthesis not use in formulating this synthesis? e. they used all of the above 9. Natural selection does not necessarily produce perfect organisms. Which of the following does not belong in the list as reasons for this? b. the compromise nature of adaptations 10. The major difference between scala naturae and tree thinking is: a. scala naturae uses only morphology and tree thinking uses only molecules

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