Explanation:
During replication, the double stranded helix of DNA is unwinded and unzipped by helicase. Polymerase cannot just start adding nucleotide to the strand so DNA primase synthesizes a short strand of nucleotide called primers, then the enzyme polymerase can now start the additional of free nucleotide. The enzyme polymerase adds free complementary nucleotide to the leading strand in 3' to 5' and the same is done for the lagging strand. The new daughter complementary strand formed on the leading strand is identical to the parent lagging strand and the new daughter complementary strand formed on the lagging strand is identical to the parent leading strand, so a pair of identical daughter double stranded DNA or two identical daughter double stranded DNA are formed.
The correct answer is B - nucleoid.
The nucleoid is a region in a prokaryotic cell that houses the main DNA material of the cell.
In contrast to eukaryotic cells with a nucleus, prokaryote have a nucleoid where the genetic material can be found. The nucleoid is different from the nucleus in eukaryotes in that the genetic material is not enclosed in a membrane to separate it from the cytoplasm.
The nucleoid usually contains only a single chromosome which has the cell DNA.
Answer:
2%
Explanation:
The scientist believe that around 2% of the species that existed on Earth have been preserved in the fossil records. It is still a hot debate about it though, as there are only around 250,000 species identified in the fossil records so far, which is less than a quarter from the species that live in the present.
The reason why scientists believe that the majority of the species have not been preserved are very logical though. One of the reasons is that lot of species existed very long time ago, so their remains just didn't lasted so long. Other reason is the movement of the plates, where we have situation where plates that existed in the past have been totally suducted and melted in the mantle, while others are at the verge of it, so every fossil with them is melted and destroyed too. Another reason is that lot of species do not have hard parts, solid bone structure, so their preservation has been pretty much impossible,
<span>Genetic variation affects an organism's probability of survival and reproduction because it is survival of the fittest. Genetic mutations can alter the characteristics of an organism. If the characteristic is beneficial to the organism, then that organism has a better probability of surviving and reproducing. The opposite would be true of genetic mutations that alter an organism's characteristics in a harmful way.</span>
Answer:
The cell products are modified, and packaged inside the Golgi Apparatus for transfered to their destination.
Explanation:
Plant cells can contain as many as several hundred smaller versions. The Golgi apparatus receives proteins and lipids (fats) from the rough endoplasmic reticulum.
