A DNA sequence that signals the start of a gene is
A. a codon.
B. an anticodon.
C. a terminator.
D. a promoter.
E. an amino acid attachment site.
C. a promoter
You might also like to view...
Diploid (2n) cells in the ____ of mosses, ferns, gymnosperms, and angiosperms divide meiotically and form haploid (1n) spores
Fill in the blank with the appropriate word.
If a male silk moth lacked a receptor for bombykol, what deficit would likely be observed?
A. The male would have difficulty locating a mate. B. The male would have difficulty locating food. C. The male would have difficulty responding to alarm signals. D. The male would have difficulty attracting a female moth. E. The male would have difficulty molting.
Hairlessness in dogs is inherited from a single dominant allele. Inheriting two dominant alleles is lethal for an embryo. Penelope, a hairless dog mates with Arnold, a dog with hair. The probability Penelope will have hairless puppies is
A) 3/4. B) 2/3. C) 1/4. D) 1/2.
Which of the following steps in normal cellular respiration ends with formation of water?
A) fermentation B) glycolysis C) electron transport D) citric acid cycle