Answer:
Copy number variations (CNVs)
Explanation:
Copy number variations (CNV) are variations in the number of copies of specific nucleotide sequences present in the genome of organisms of the same species (or closely related species). The Human Genome Project showed that the human genome contains many CNVs, which are caused by duplications and deletions (indels) of large regions of repetitive (non-coding) DNA regions. Since CNV are usually localized in non-coding DNA regions, they generally are evolutionary neutral (i.e., prone to diverge among organisms) and therefore don't affect the phenotype of the individual. Single Nucleotide Polymorphisms (SNPs) represent another type of sequence variation that is abundant across the human genome.
Radioactive decay is measured in half-lives.
I think it is B. A and D have switched the correct definitions, and electron microscopes are not used for whole, live organisms.
Parthenogenesis is a method of reproduction in which D.an egg develops without being fertilized by a sperm. That's true due to the definition of parthenogenesis.