Extinct jawless fish include the:a
lungfishes.
b. lancelets.
c. placoderms.
d. acanthodians.
e. ostracoderms.
e
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It is currently estimated by the American Cancer Society that only about 10% of all people with melanoma have a family history of the disease. What factors might contribute to the development of melanoma in the other 90% of patients?
A. exposure to solar radiation B. mutations in a melanocyte C. exposure to environmental mutagens D. All of the answer choices are correct. E. None of the answer options is correct.
Species whose ranges overlap, but do not interbreed because they are found in different environments or areas within
the range, are said to exhibit:a. habitat isolation. b. temporal isolation. c. biological isolation. d. evolutionary isolation. e. environmental isolation.
Independent assortment of chromosomes occurs during _____
A) meiosis I only B) meiosis II only C) mitosis and meiosis I D) mitosis and meiosis II
Which of the following combinations of chromosomes would be found in a person afflicted with Turner syndrome?
A) XO B) XX C) XYY D) XXY E) XY