In humans, having dimples in the cheeks is a dominant trait. If a child has dimples but only one of her parents does, what are the genotypes of her parents? (D = dimples; d = no dimples)
A. One parent dd, other parent DD
B. One parent dd, other parent Dd
C. One parent Dd, other parent DD
D. One parent must be DD, the other parent could be either dd or Dd
E. One parent must be dd, the other parent could be either Dd or DD
E. One parent must be dd, the other parent could be either Dd or DD
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Dynein motor proteins use ATP energy to:
A. carry vesicles along a microtubule within a cell in a minus-to-plus direction. B. carry vesicles along a microfilament within a cell in a minus-to-plus direction. C. carry vesicles along a microtubule within a cell in a plus-to-minus direction. D. carry vesicles along a microfilament within a cell in a plus-to-minus direction. E. slide along microfilaments to contract muscle cells.
How might a plant communicate to another plant that it has been attacked by a herbivore?
What will be an ideal response?
Half siblings share on average 50% of their alleles by inheritance from their shared parent, making their degree of
relatedness 0.50.
a. True b. False
Which physician realized that doctors were causing maternal deaths by failing to wash their hands while assisting during childbirth?
A) Girolamo Fracastoro B) Joseph Lister C) Louis Pasteur D) Ignaz Semmelweis