A test cross is performed to determine if a specific individual is a carrier. The results generate a 50/50 ratio of phenotypes. The test subject is therefore ________
A) heterozygous
B) homozygous dominant
C) homozygous recessive
D) heterozygous dominant
A
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Nondisjunction may occur during _____
a. mitosis b. meiosis c. fertilization d. both mitosis and meiosis
During photosynthesis, ATP molecules are generated by:
A. light striking the chlorophyll molecules B. the Calvin cycle C. the splitting of water D. chemiosmosis
How is air contamination prevented when an inoculating loop is used to introduce or remove organisms from an agar plate?
What will be an ideal response?
Which of the following is incorrect about transfer RNA?
A. The initiator tRNA that binds to the P site has the anticodon UAC. B. has a bottom hairpin loop with an anticodon C. contains a binding site for an amino acid D. An anticodon is complementary to a codon. E. Initiator tRNA in bacteria carries tryptophan.