Biology, 04.08.2019 17:30, eldercunningham
Sickle-cell disease is clearly a debilitating disease, but why does the mutated beta-globin allele persist? a. the mutated allele offers some protection (selective advantage) against malaria when in the heterozygous state with the normal allele. b. mutations keep the mutated allele at high frequency throughout the world. c. genetic drifts prevents the mutated allele from disappearing. d. the mutated allele once provided a selective advantage in homozygous individuals, and may once again do so in the future. e. none of the other answer choices are correct.
Answers: 1
Biology, 21.06.2019 23:00, lanay645
Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?
Answers: 1
Biology, 22.06.2019 15:30, jeffreyaxtell4132
Will ! a cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. assume the cellโs membrane is permeable to water, but not permeable to the sucrose. where will the water diffuse? explain.
Answers: 1
Biology, 22.06.2019 16:50, crisely
Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.
Answers: 1
Sickle-cell disease is clearly a debilitating disease, but why does the mutated beta-globin allele p...
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