Genetic information can be carried in which of the following biomolecules?
A、Proteins
B、DNA and not RNA
C、RNA and not DNA
D、Either DNA or RNA
A、Proteins
B、DNA and not RNA
C、RNA and not DNA
D、Either DNA or RNA
A、1 and 4
B、1 and 3
C、3 and 4
D、2 and 3
A、where
B、that
C、which
D、what
B.Momma,in this autobiographical account A Lesson in Living , was Marguerite’s mother.
C.Mrs. Flowers was from an aristocratic family and enjoyed respect of both the white and black folks in the town.
A、Acid rain also damages buildings and railway railings.
B、Acid rain kills plants and water animals but is not really harmful to humans.
C、Acid rain may attack the regions where it is formed and other regions as well.
D、Smoke from factories and power-stations in the USA is the main cause of acid rain in Canada.
A、Retailers who sell an organisation's products
B、An organisation's supplier of raw materials
C、Customers
D、An advertising agency who writes the copy for an organisation's television commercial
A、a theoretical worker
B、other people and systems only
C、oneself only
D、other people, systems, or oneself
A、develop the PCR technique.
B、discover DNA in the nucleus of cells.
C、describe the structure of DNA.
D、show that genes were made of DNA.
E、develop a method for sequencing DNA.
A、James Watson
B、Thomas Hunt Morgan
C、John B. S. Haldane
D、Charles Darwin
A、fruit flies
B、humans
C、yeast
D、mice
E、zebrafish
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