In which period of evolution, in the Cenozoic era, would you find Homo sapiens?
A. Cretaceous
B. Neoprene
C. Jurassic
D. Quarternary
E. Paleogene
D. Quarternary
You might also like to view...
An advantage of chorionic villus sampling (compared with amniocentesis) is that:a
chorionic villus sampling detects a much wider range of genetic defects than does amniocentesis. b. chorionic villus sampling is much less expensive than is amniocentesis. c. chorionic villus sampling is much less invasive than amniocentesis. d. chorionic villus sampling is much easier to perform than amniocentesis. e. chorionic villus sampling can be performed much earlier than can amniocentesis.
If the blood type and the number of fingers are inherited independently, this means
A. they are on the same chromosome. B. they are linked to each other. C. they segregate randomly. D. B blood and six fingers are rare.
You are interested in Fuzzy, a soluble protein that functions within the ER lumen. Given that information, which of the following statements must be true?
(a) Fuzzy has a C-terminal signal sequence that binds to SRP. (b) Only one ribosome can be bound to the mRNA encoding Fuzzy during translation. (c) Fuzzy must contain a hydrophobic stop-transfer sequence. (d) Once the signal sequence from Fuzzy has been cleaved, the signal peptide will be ejected into the ER membrane and degraded.
A new operon is discovered in a bacterium. The control of this operon is affected by a protein that is
made by another gene, and is made in an active form that binds to the DNA near the operon to prevent transcription. This is an example of __________ control. a. positive b. negative c. activational d. repressing e. inducing