Polypeptides differ in their ________ and ________ of amino acids
Fill in the blank(s) with correct word
number; kinds
You might also like to view...
Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall. They spend the winter in these warmer areas, where they feed and prepare for the spring migration north and another breeding season
Two hypothetical species of sparrow, A and B, overwinter together in mixed flocks in Costa Rica. In spring, species A goes to the east coast of North America, and species B goes to the west coast. What can you say about the isolating mechanisms of these two species? A) They must have strong postzygotic isolating mechanisms to spend winter in such close proximity. B) They must have strong prezygotic isolating mechanisms to spend winter in such close proximity. C) Their winter habitat has no bearing on their degree of reproductive isolation. D) Reinforcement must be occurring when they winter together.
The ________ experiments use an initial exposure to a radioactive compound in the mRNA followed by monitoring of the radioactive compound to determine its fate in the cell.
Fill in the blank(s) with the appropriate word(s).
Genes A and B are on the same chromosome. The genes have alleles A and B on one homologous chromosome, and the alleles a and b on its paired homolog. How could an individual with this allele arrangement produce a gamete with a chromosome containing the alleles Ab or aB?
A. mitosis B. fragmentation of the chromosome C. random fertilization D. independent assortment E. crossing-over
Current research indicates that the temperate forest has the greatest biodiversity
Indicate whether the statement is true or false