Answer:
DNA replication follows semi conservative mode of replication
Explanation:
The results of Meselson and Stahl's experiments can be explained by semi conservative mode of DNA replication. According to it, the two DNA strands separate and both are used for synthesis of new DNA strands such that the new DNA molecule has one parental and one new strand.
In the experiment, originally the medium was 15N so all the DNA molecules had 15N. Later the medium was changed to 14N. In first round of replication in new medium, the two 15N strands in a DNA molecule separated and formed new strands using 14N. So all the DNA molecules had one 15N and one 14N strand.
In the second round of replication, the 15N-14N hybrid DNA molecule separated again. Now, 15N gave rise to 14N strand and 14N strand also gave rise to 14N strand such that half of the DNA molecules were 15N-14N hybrids and half were 14N-14N. Hence, researchers concluded that DNA replicated according to semi conservative mode of replication.
Four new haploid cells are formed once the sister chromatids within the two daughter cells separate, forming four new haploid gametes.
One of the biggest sources is called nonpoint sources pollution which occurs as a runoff. Hope this helps out
Answer and Explanation:
What is the term that correctly identifies this part of a dermal (skin) cell?
cytoplasm. The interior of a cell consists of a jelly-like substance called cytoplasm. It is here that most of the chemical reactions essential for life takes place. Within the cytoplasm are scattered several organelles.
Is the person has two X chromosomes and one Y chromosome, the person turns out to be an hermaphrodite.
Eukaryotes has membrane-bound nucleus while prokaryotes do not have.
Eukaryotes are multicellular, while prokaryotes are unicellular.
