Sometimes hybrids are capable of reproducing; however, their offspring are incapable of producing future offspring. This is an example of _______ acting as a postzygotic isolating mechanism.

What will be an ideal response?


F? fitness

Biology & Microbiology

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A DNA barcode system uses a nuclear gene that varies greatly between species

a. True b. False

Biology & Microbiology

Which statement is true about sudden cardiac arrest?

a. It happens about 20,000 times annually in the United States. b. It is usually caused by a birth defect when it happens in people aged 36 or younger. c. Its survival rate can be increased by performing a tracheotomy d. It occurs only in the elderly. e. Its survival rate increases about 10% through the use of CPR.

Biology & Microbiology

After which meiotic stage (meiosis I or II) would one expect monads to be formed?

What will be an ideal response?

Biology & Microbiology

By inserting four developmental genes into ordinary cells such as skin cells, Shinya Yamanaka and James Thomson were able to convert them into:

A) embryonic stem cells. B) induced pluripotent stem cells. C) nerve cells. D) egg cells.

Biology & Microbiology