People homozygous for the sickle-cell anemia allele develop a life threatening disease, while those homozygous for the normal allele are at the highest risk of dying from malaria. Carriers have some resistance to malaria, but do not develop sickle cell anemia. This is an example of ____
A. founder effect.
B. genetic bottleneck.
C. heterozygosity.
D. heterozygote advantage.
E. point mutation.
D. heterozygote advantage.
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The member of the hospital staff who surveys the types and numbers of nosocomial infections is called the
A. head nurse. B. staff control. C. attending physician. D. infection control practitioner.
Imagine that you are studying a mammal with a mutation that prevented the growth of hair. What issues do you predict would be problematic for this animal as a result of lacking hair? Check all that apply.
_____ retaining body heat _____ sensing environmental changes _____ hiding from predators _____ defense against predators _____ ability to digest plants
What is not a main factor of change to bathygraphic features in the ocean?
a. Subsidence b. Erosion c. Sedimentation d. Uplift
A(n) ________ is a group of cells of similar type that work together to serve a common function
Fill in the blank(s) with correct word