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
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A DNA barcode system uses a nuclear gene that varies greatly between species
a. True b. False
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.
After which meiotic stage (meiosis I or II) would one expect monads to be formed?
What will be an ideal response?
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.