It has been hypothesized that people who are heterozygous for the allele that causes the deadly genetic condition cystic fibrosis (which, among other symptoms, reduces fertility) are more resistant to the deadly disease tuberculosis. if the cystic fibrosis allele protects against tuberculosis the same way the sickle-cell allele protects against malaria, then which of the following should be true of a comparison between regions with and without tuberculosis? a)cystic fibrosis deaths should be more common in regions with tuberculosis. b) cystic fibrosis deaths should be less common in regions with tuberculosis. c) cystic fibrosis deaths should be equally common in both types of regions. d) regional differences in the cystic fibrosis death rate should be purely random and unpredictable.
Answers: 3
Biology, 22.06.2019 02:00, jaquiel9358
Name the glands associated with human digestive system
Answers: 1
Biology, 22.06.2019 06:30, Aliyahh5673
Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food
Answers: 1
Biology, 22.06.2019 17:00, kotetravels10
The data below simulate what happened to peppered moths in england after the industrial revolution which statement best describes the process that produced one of the emding populations of moths ?light colored moths were selected for on light colored trees
Answers: 3
It has been hypothesized that people who are heterozygous for the allele that causes the deadly gene...
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