Antigen receptors are capable of producing large diversity due to the fact that there are __________
cassettes (versions) of each __________. Fill in the blank(s) with the appropriate word(s).
multiple; gene
You might also like to view...
If one of Mendel's genes had three alleles that differentially affected the phenotype rather than two, what would he have observed among the progeny of many crosses between all pairs of the three pure-breeding lines in the F1 and F2 generations?
Comments: This case brings up the chance of codominance or incomplete dominance and provides for multiple phenotypes among a large set of crosses. In any one cross, there would be specific pure-breeding strains used, but there could be white, pink, and red flowers that are all pure breeding that may have complete or incomplete dominance. The population effects of this kind of genetics could move toward a broader range of phenotypes leading to the idea of blending inheritance. Mendel's innovative idea was to narrow the traits to simple binary phenotypes. This complication could show what could happen if he had not been so thoughtful. A. In each of the crosses, two phenotypes in the F1 generation. B. Only a single phenotype would be observed in the F1 generation because only one allele can be dominant. C. No evidence would exist for the law of segregation. D. No pure breeding plants produced in the F2. E. None of the responses are correct.
A point mutation alters
A) a single base. B) a chromosome tip. C) a centromere. D) only a purine.
Twenty-five percent of all prescription drugs sold in the United States are based on substances derived from fewer than 50 species of plants
Indicate whether the statement is true or false
Chloroplasts possess circular DNA and reproduce by binary fission
Indicate whether the statement is true or false