Biology, 30.11.2019 01:31 Samanthacook5626
Aperson who is heterozygous for the cystic fibrosis allele moves to a small, isolated community where no one previously carried the allele. if the cystic fibrosis allele protects against tuberculosis the same way the sickle-cell allele protects against malaria, what should happen to the frequency of the cystic fibrosis allele in the community over time, and why? a. the cystic fibrosis allele should disappear from the population, because a single individual with the allele is not enough for it to proliferate. b. the cystic fibrosis allele should increase to a relatively high frequency, because heterozygotes with the allele will be more likely to survive than others c. the cystic fibrosis allele should become fixed in the population, due to genetic drift. d. the cystic fibrosis allele should either disappear or increase in frequency, depending on chance as well as on tuberculosis prevalence and death rate.
Answers: 2
Biology, 22.06.2019 05:00
Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.
Answers: 2
Biology, 22.06.2019 05:30
Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.
Answers: 1
Aperson who is heterozygous for the cystic fibrosis allele moves to a small, isolated community wher...
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