Crossing-over results in
A. chromosome duplication.
B. new combinations of genes.
C. point mutations.
D. All of these answers are true.
B. new combinations of genes.
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When an atom or molecule gains one or more electrons, it is said to be:
A. energized. B. oxidized. C. polarized. D. reduced.
The osmoregulatory and ionoregulatory problems facing a freshwater fish are
A. loss of water and loss of ions. B. loss of water and gain of ions. C. gain of water and loss of ions. D. gain of water and gain of ions. E. loss of urine and gain of ions.
If a sieve tube in a plant becomes blocked, the
plant will experience difficulty in a. carrying on transpiration. b. transporting minerals. c. translocating food throughout the plant. d. completing cell division and experiencing normal growth. e. healing wounds.
What is commonly known as a pinworm and is most common in children
What will be an ideal response?