BIO 340 Exam Questions And Answers
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Your chromosomes are located _______ and they are made of ___________ .
a. floating in the cytoplasm, lipids
b. in the cell membrane, protein
c. inside the mitochondria, genes
d. inside the cytoplasm, protein
e. inside the nucleus, DNA - answere. ...
Transcribe the following DNA sequence (non template strand): 5'-ATGGCCGGTTATTAAGCA-3'
a. 5'-ACGAATTATTGGCCGGTA-3'
b. 5'-TACCGGCCAATAATTCGT-3'
c. 5'-ATGGCCGGTTATTAAGCA-3'
d. 5'-AUGGCCGGUUAUUAAGCA-3' - answer✔d. 5'-AUGGCCGGUUAUUAAGCA-3'
In which of the following pairs do both evolutionary processes introduce new genetic variation into a
population?
a. Natural selection and genetic drift
b. Mutation and gene flow
c. Natural selection and gene flow
d. Gene flow and genetic drift - answer✔b. Mutation and gene flow
Mutation can be defined as the addition of genetic variation that increases the hereditary diversity of a
population.
a. True
b. False - answer✔a. True
If an allele has a frequency of 1:
a. It is found in 50% of the population
b. It is found in 25% of the population
c. It is found in 100% of the population
d. It is found in 0% of the population - answer✔c. It is found in 100% of the population
When male lions reach sexual maturity, they leave their group in search of a new pride. This can alter
the allele frequencies of the population through which of the following mechanisms?
a. Natural selection
b. Genetic drift
c. Gene flow
d. Random mating - answer✔c. Gene flow
When closely related individuals mate with each other, or inbreed, the offspring are often not as fit as
the offspring of two unrelated individuals. Why?
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