Which of the following would have the highest productivity? 

A. desert
B. tundra
C. temperate deciduous forest
D. the open ocean


C. temperate deciduous forest

Biology & Microbiology

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Darnell and Tinaka are each carriers of an autosomal recessive disorder that is lethal in early childhood. They want to have a child who is free of the disease, so they have preimplantation genetic diagnosis. Unfortunately, their child has the disease. A scientific explanation is that

A) the blastomere that was tested had undergone a somatic mutation, making it not representative of the rest of the embryo. B) Darnell was not really the father. C) the 7 cells of the remaining embryo each underwent a mutation, so the sampled cell was not representative. D) Darnell or Tinaka is really homozygous recessive, and not heterozygous.

Biology & Microbiology

Hemophilia A is

A. an X-linked dominant disorder. B. an X-linked recessive disorder. C. an X-linked recessive disorder, causing a defective blood clotting protein. D. an X-linked dominant disorder, causing a defective blood clotting protein. E. a defective blood clotting protein.

Biology & Microbiology

The density of a population is usually measured by counting every individual

Indicate whether the statement is true or false

Biology & Microbiology

What is calmodulin?

a. a hormone b. a phosphatase c. a phospholipase d. a protein kinase e. a calcium-binding protein

Biology & Microbiology