Translation is initiated at the ____
a. AUG codon
b. UAG codon
c. anticodon
d. promoter
e. downstream sequence
a
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Place these genes in their temporal order of expression from earliest to latest during Drosophila development.
A. Bicoid, Gap, Homeotic B. Homeotic, Gap, Bicoid C. Homeotic, Bicoid , Gap D. These genes are not expressed at different times during development. They are expressed at the same time, but in a different spatial order. E. Kruppel, gooseberry, even-skipped
In some organisms, crossing-over does not occur, and the homologous chromosomes are held together via some other
mechanism. Even though crossing-over leads to genetic diversity, the absence of crossing-over in these organisms does not prevent the production of diverse gametes. Why is this?
What will be an ideal response?Crossing over
a. generally results in binary fission. b. involves centrioles. c. involves breakages and exchanges between sister chromatids. d. results in new combinations of alleles being channeled into the daughter cells. e. does all of these.
Which of the following is a condition in which a person inherits an extra copy of a chromosome?
A) monosomy B) disjunction C) trisomy D) inversion E) duplication