In humans, the most frequently seen autosomal aneuploid is
A) monosomy 21.
B) trisomy 13.
C) trisomy 21.
D) tetraploidy.
C) trisomy 21.
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What is an argument against the theory that RNA was the first polymer of life?
a. Only limited replication of proteins is possible. b. The transfer of information from RNA to DNA under primordial conditions is difficult. c. The primordial nucleotides could not form a polymer. d. RNA cannot transfer genetic information to xeno-nucleic acids. e. The synthesis of RNA nucleotides under primordial conditions is difficult.
The _____ cycle is a sedimentary cycle
a. phosphorus c. nitrogen b. carbon d. water
Which substance is produced as a product of both glycolysis and aerobic respiration?
A lactic acid B ethyl alcohol C ATP D glucose
Match the following
0.03mm A) 300um B) 3000um C) 30um