Extinct jawless fish include the:a

lungfishes.
b. lancelets.
c. placoderms.
d. acanthodians.
e. ostracoderms.


e

Biology & Microbiology

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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.

Biology & Microbiology

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.

Biology & Microbiology

Independent assortment of chromosomes occurs during _____

A) meiosis I only B) meiosis II only C) mitosis and meiosis I D) mitosis and meiosis II

Biology & Microbiology

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

Biology & Microbiology