Four of the five stages listed below are related by the
number of chromosomes present. Select the
exception.
a. sperm
b. spermatogonia
c. secondary spermatocyte
d. early spermatids
e. late spermatids
Answer: b
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Which of the following is (are) among the most
effective contraceptive approaches? a. abstinence b. tubal ligation c. vasectomy d. hormonal implant e. all of these
Which of the following use light energy to synthesize organic compounds from CO2?
a. photoautotrophs b. photoheterotrophs c. chemoautotrophs d. chemoheterotrophs e. parastic chemoheterotrophs
In fast-growing Escherichia coli cells, multiple replication forks of genomic DNA allows binary fission to occur before the genome has been fully duplicated
Indicate whether the statement is true or false.
Number, and number in relation the population
a. pattern b. frequency c. mode d. distribution