#Question id: 5396
#General Aptitude
If the mean of a,b,c is M and ab+bc+ca=0 then the mean of a^2,b^2,c^2 is:
#Question id: 5781
#Unit 8. Inheritance Biology
A ____ mutation affects the phenotype only under certain conditions.
#Question id: 5650
#Unit 5. Developmental Biology
Thalidomide, now banned for use as a sedative during pregnancy, was used in the early 1960s by many women in their first trimester of pregnancy. Some of these women gave birth to children with limb and organ deformities, suggesting that the drug most likely influenced ________.
#Question id: 12440
#Unit 10. Ecological Principles
#Question id: 2441
#Unit 2. Cellular Organization
Which of the following statement(s) is (are) true of microtubule assembly?
a. GDP-tubulin normally assembles into microtubules.
b. Microtubule (-) ends grow faster than microtubule (+) ends.
c. Tubulin subunits assemble to form a protofilament.
d. Microtubules consist of multiple protofilaments.
e. Microtubules with a GTP cap will shorten.