Over a period of many generations, a single species of snake has changed to the point that organisms from two different areas are no longer able to interbreed. This is an example of
A. divergent evolution.
B. polyploidy.
C. adaptive radiation.
D. convergent evolution.
A. divergent evolution.
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Disease-causing infectious agents are known as ____________________
Fill in the blank(s) with correct word
Which of the following is not one of the five classes of antibodies?
What will be an ideal response?
Which of the following is properly matched?
a. compact bone tissue; light weight b. spongy bone; matrix of dense concentric rings c. red marrow; mostly fat d. yellow marrow; major site of blood cell formation e. none of these
Which of the following points to a recessive X-linked trait?
a. it is common in both men and woman
b. a carrier mother has the trait on both X chromosomes c. a carrier father carries two copies of the gene d. only a daughter can inherit a recessive allele from an affected father e. an affected daughter has the trait on one X chromosome