Which of the following is TRUE of fertilization?
A. It restores the egg to a diploid state.
B. It activates cell division.
C. It is critical to maintaining membrane polarity.
D. It both restores the egg to a diploid state and activates cell division.
E. It both restores the egg to a diploid state and maintains membrane polarity.
D. It both restores the egg to a diploid state and activates cell division.
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The Meselson-Stahl experiments supported the model of dispersive DNA replication
Indicate whether the statement is true or false
Which of the following would occur if excess sweating led to dehydration and high salt concentration in the bloodstream?
A. The hypothalamus would signal the kidneys to release more salt into the urine. B. The hypothalamus would signal the kidneys to absorb more salt from the urine. C. The liver would signal the kidneys to absorb more salt from the urine. D. The liver would signal the kidneys to release more salt from the urine. E. None of the answer choices is correct.
If a DNA molecule was a spiral staircase, what would the steps of the staircase be?
a. covalent bonds b. deoxyribose c. base pairs d. hydrogen bonds e. phosphate
The syntenic genes A and Z are linked. A cross between two parents, AAZZ and aazz, produces F1 progeny with the AaZz genotype. What are the possible arrangements of alleles on the F1 progeny's chromosomes?
A) AZ/az B) Az/aZ C) Aa/Zz D) AZ/Az or az/aZ E) A/Z or a/z