The chromosomal designation for a human female is
A. XYY.
B. XY.
C. YY.
D. XX.
E. None of the answers are correct.
D. XX.
Biology & Microbiology
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During prophase II,
a. a new bipolar spindle forms. b. crossing over occurs. c. chromosomes are single-stranded. d. the cell is diploid. e. the nuclear envelope re-forms.
Biology & Microbiology
Making mRNA from DNA is known as ____
a. translation b. transcription c. polymerase d. replication e. promoter
Biology & Microbiology
In bacteria, the small, circular pieces of DNA that are located outside the chromosome are called
A) sex pili. B) plasmids. C) bacteriophages. D) flagella. E) endospores.
Biology & Microbiology
When our oil supply is depleted, a new material will need to be used to produce __________
A- glass B- paper C- plastic D- aluminum E- cardboard
Biology & Microbiology