Meiosis differs from mitosis in that during meiosis
a. the nuclear envelope remains intact.
b. haploid cells are produced from diploid cells.
c. there are two S phases.
d. two haploid daughter cells are produced.
Answer: d. two haploid daughter cells are produced.
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Which of the following enzymes or enzyme subunits does not rely on ATP hydrolysis for its correct function?
A. DnaB helicase B. primase C. Pol III clamp loader D. DnaA E. DnaC
In long-day plants,
a. extended daylight produces more Pfr. b. the number of hours of darkness must be less than a critical value. c. the interruption of the dark period does not upset the flowering sequence. d. flowering is limited to summertime under normal conditions. e. all of these occur.
The Human Genome Project seeks to rid the human population of genetic disease
Indicate whether the statement is true or false
A monohybrid cross is
a) the second generation of a self-fertilized plant. b) a breeding experiment in which the parental varieties have only one trait in common. c) a breeding experiment in which the parental varieties differ in only one character. d) a triploid plant that results from breeding two very different plants. e) a breeding experiment in which the parental varieties have only one prominent trait.