Carbon dioxide is a pollutant because it
a. is absorbed by the ocean and converted into
insoluble carbonates.
b. is utilized when fossil fuel is burned.
c. is a waste product of photosynthesis.
d. cannot be recycled at a rate equal to its
present production.
e. is replacing oxygen as the most abundant
gas in the air
D
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The most common form of gene therapy involves inserting a normal gene into cells that contain a defective version of the gene. In order to use gene therapy to prevent a man from passing a defective gene on to future generations, you should try to insert normal copies of the gene into
A. blood cells. B. germ-line cells. C. somatic cells in the testes. D. bone marrow cells. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about fertilization? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What evidence supports the hypothesis that humans originated in Africa?
A) H. sapiens genomes contain some alleles from Neanderthal genomes. B) One Y chromosome lineage is that originated 1,000 years ago is found in 8% of modern day Asian men. C) Alleles of nuclear genes are less variable in African populations than in other populations. D) Mitochondrial DNA sequence variation is higher in African populations than in other populations.
When a biologist is looking for a suitable organism in which she can study the process of evolution in a laboratory setting, what would be an important consideration?
A) The organism should be large. B) The organism should have a short generation time. C) The organism should produce relatively few offspring. D) The organism should have a complete fossil record of its ancestry.
A man with kinky hair has children by a woman with non-kinky hair. They have five children, three of whom have kinky hair. Based on this information alone, what inheritance pattern is seen with the kinky hair trait?
a. single-gene trait b. pleiotropy c. multiple alleles d. incomplete dominance e. linked inheritance