The correct answer is; D
Homologous structures is the term used to describe physical similarities between related species that indicates a common ancestry.
Homologous structures are structures that have the same form or functions in different animals, indicating that the animals have evolved from a common ancestor. Homologous structures usually appear very similar in form but it may or may not have the same function in the different animals that are suggested to be related. The bones in the front limbs of many different mammals (such as humans, deer and bats) which are similar in their structure and arrangement are homologous structures.
<h2><em>the DNA that is packaged into chromosomes must be fully copied. Previous to replication, a germ cell contains two copies of each chromosome, a maternal copy, and a paternal copy. ... DNA replication occurs in the same fashion as it does during mitosis.</em></h2>
<span>The two identical chromosomes that result from DNA replication are referred to assister chromatids. Sister chromatids are held together by proteins at a region of the chromosome called the centromere.</span>
Oil Coal and Natural Gas are the fossil fuels the USA has the most reserves of. Given that only one of them is on the answers Coal is the correct answer.
