Carbon atoms can form 4 covalent bonds.
The answer is; The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them
The closer together two genes are on a chromosome, the higher the likelihood that they will be inherited together. This is referred to as genetic linkage. The higher the genetic linkage the lower the recombination frequency of the two genes.
B
I believe it is B, so do double check. I hope it is right.
The correct form to write a binomial nomenclature is Genus species