The first cloned mammal, Dolly:a
was stillborn.
b. developed arthritis and a virus-induced lung cancer at a relatively young age.
c. lived a short period of time before suffering advanced aging effects.
d. lived to a normal age for sheep.
e. lived longer than normal sheep.
b
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The aminoglycosides and tetracycline specifically target the ________ interfering with ________.
A. cell membrane enzymes; transpeptidation step of peptidoglycan synthesis B. tRNAs; protein synthesis C. topoisomerases; DNA replication D. 30s ribosomal subunit; protein synthesis
Researchers have found that schizophrenia may be caused by multiple genes, each contributing equally to the behavioral phenotype. This is an example of _____
a. a polygenic additive model b. epistasis c. single gene, dominant trait d. single gene, recessive trait e. genome wide association
The mutation that causes the lighter skin color of all people of European descent was the result of a ____ in the gene
for a melanin transport protein.
a. base-pair substitution b. insertion c. deletion d. whole chromosome duplication e. multiple gene mutations involving several mechanisms
Gas exchange and stomata When water is in short supply, plants _____ their stomata which _____ gas exchange.
a) close, decreases b) open, decreases c) close, increases d) open, increases