In the F2 generation, how many genotypic classes could be generated from a dihybrid cross of two heterozygotes in which the genes involved show complete dominance?
A) 3
B) 4
C) 8
D) 9
E) 12
D
You might also like to view...
Broad, ecologically uniform areas with stable and distinctive collections of species are called ____
Fill in the blank with the appropriate word.
Nisin
A. is a food additive that blocks the growth of some gram positive bacteria. B. is a small amphiphilic peptide that disrupts membrane integrity and function. C. is a bacteriocin produced by some strains of Lactococcus lactis. D. All of the choices are correct.
When bacteria appear in tissues, a type of large cell engulfs and destroys them. Which process are these cells using to engulf the bacteria?
A) phagocytosis B) pinocytosis C) active transport D) exocytosis
A student discovers a mat of green organisms living along the edge of a stream and suspects it is a moss. To confirm that this organism is a moss and not a green alga, he should look for _____.
Fill in the blank(s) with the appropriate word(s).