The answer is true light is one of the forms of electromagnetic energy.
Answer:
sand is heterogeneous mixture
A mutation is a rare, accidental or induced modification of genetic information (DNA or RNA sequence) in the genome.
The consequences of a mutation vary according to the part of the genome affected. A mutation is said to be hereditary if the mutated genetic sequence is passed on to the next generation.
In multicellular animals, germline mutations can be transmitted to offspring, whereas somatic mutations do.
Somatic mutations do not affect cells intended for reproduction, so they are never hereditary:
* Post-zygotic mutations are the mutations that appear in the egg after fertilization. They are rarer and are expressed as mosaic in the individual concerned (the mutation will be present only in the daughter cells originating from the mutated embryonic cell).
* Mutations can appear throughout life on the DNA of any cell; they are then transmitted to the line of the daughter cells. These can, in some cases, become tumor cells and then form cancer.
Answer: Roundworm is refered to as parasite because it harms it host.
Explanation: Roundworm belongs to nematodes, they have two openings mouth and anus,with segmented body,it derives it nutrients by attaching itself to internal organs of it host by and suck the host nutrients.example of Roundworm is Ascaris
During S phase the two strands of the double helix are separated by enzymes.
Two DNA strands are synthesized that are complementary to each original strand.
DNA polymerase proofreads each DNA strand.
The two copies of DNA with a complete set of genes separate from each other in the anaphase of mitosis.
