What is the most likely explanation for how speciation occurs? A. It occurs by more than one method.
B. It occurs by gradual changes.
C. It occurs only by geographic isolation.
D. It occurs only by natural selection.

How does a lytic infection differ from a lysogenic infection?

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.