Multiple choice help please? If you can\'t or won\'t answer all of them, please
ID: 268251 • Letter: M
Question
Multiple choice help please?
If you can't or won't answer all of them, please do not answer. I'm running out of questions :/
7. The transfer of an antibiotic resistant gene from one bacterial species to a different species is and example of
A.
genetic drift
B.
migration
C.
horizontal gene transfer
D.
exon shuffling
8. A population of rats has 329 individuals. The frequency of the albino (recessive) allele is 0.3. How many individuals are heterozygous?
A.
108
B.
30
C.
161
D.
138
E.
54
F.
None of the other choices is correct.
9. A gene exists in two alleles designated D and d. If 48 copies of this gene are the D allele and 152 are the d allele, what is the allele frequency of D?
A.
0.76
B.
0.38
C.
0.32
D.
0.24
10. The allele frequencies for a population are A = 0.6 and a = 0.4. Conditions change and fitness values are now AA = 0.3, Aa = 0.7 and aa = 1.0. What is the allele frequency of A in the next generation?
A.
between 0.5 and 0.6
B.
between 0.4 and 0.5
C.
between 0.6 and 0.7
D.
0.6
E.
between 0.3 and 0.4
A.
genetic drift
B.
migration
C.
horizontal gene transfer
D.
exon shuffling
Explanation / Answer
ANSWER 7.
C. horizontal gene transfer
ANSWER 8.
Heterozygous individuals = 2 * 0.3 * (1 - 0.3) * 329 = 138.18
D. 138
ANSWER 9.
Frequency of D allele = 48 / (48 + 152) = 0.24
D. 0.24
ANSWER 10.
Allele frequency of A in the next generation
= 0.3 * (0.6 * 0.6) + 0.7 * (2 * 0.4 * 0.6)
B. between 0.4 and 0.5
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