What would happen if M RNA were radio actively labeled instead of polypeptides is that instead of one seeing the DNA passing through all the molecular factories you will instead see just messenger RNA taking code and delivering it to Ribosome. This is mainly found in cytoplasm and Endoplasmic recticulums.
Answer:
As DNA contain phosphorus in its structure in large amount, therefore, Harshey and Chase labeled DNA with radioactive phosphorus and because protein contains some amino acids which have sulfur so they labeled T2 bacteriophage protein with sulfur.
So after that they infected E.coli bacteria with radioactively labeled phages and after centrifugation, they have found that pellet which contains cells is showing the presence of radioactive phosphorus and supernatant which have T2 phage capsid protein showing the presence of radioactive sulfur.
Therefore by labeling viral protein and viral DNA they found that DNA is the genetic material not protein.
Answer:
An inversion
Explanation:
An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome. Genetic material may or may not be lost as a result of the chromosome breaks.
Answer:
The correct answer is - flatworms and roundworms.
Explanation:
Helminths are the group of free living and some are parastic organisms present in aquatic, terrestrial environment or in animals or plants respectively. parasitic helminths are the group of worms or organisms that lives inside the GI tract or other parts of the body of host and makes them weak. The two major groups of parasitic helminths are -
Flatworms (platyhelminths) is a parasitic helminths, have leaf like body which is thin and segmented while roundworms or nematode have cylindrical and unsegmented body.
Thus, the correct answer is - flatworms and roundworms.
Human sperm and eggs contain 23 chromosomes. Human zygotes contain 46<span> chromosomes. The type of cell division that produces gametes with half the normal chromosome number is called meiosis. It is used to produce cells for repair and asexual reproduction.</span>
