Helikazlar tüm canlılar için hayatî önem taşıyan bir enzim sınıfıdır. Nükleik asitlerin fosfodiester omurgası üzerinde hareket ederek birbirlerine hidrojen bağlarıyla bağlanmış nükleik asit ipliklerini (DNA'nın, RNA'nın veya RNA-DNA hibritlerinin) ayrıştırır.
Answer:
The only haploid cells in humans (with 23 chromosomes and no matching pairs) are:
A. sperm and egg cells
Hydrogen bonds exists between the DNA strand and its complementary strand such that; there are two hydrogen bonds between every A and T, and three between every C and G.
Therefore; in this case there will be (2 ×3 ) +(3×3) = 15 hydrogen bonds for the above strand. this is because Adenine binds to Thyamine with two bonds (3 pairs) and Guanine binds to Cytosine with three bonds (3 pairs).
Multiply by the power of 10x and you get your answer. Which is by to ten.
Nondisjunction could occur during - Anaphase ii
<h3>
What is Nondisjunction ?</h3>
Nondisjunction occurs when the chromosomes do not separate. In this case, gametes are produced with an abnormal number of chromosomes. It is an abnormal number of chromosomes in all cells called aneuploidy or in some cells called mosaicism.
Example ; Down's syndrome, Trisomy of autosomes.
Anaphase is the 3rd stage of cell division process specially after the metaphase in mitosis. In this step sister chromatids gets seperated from each other and pulls towards the cell's ending portion.
specially in Anaphase 2 chromatids splits at the centromere and pulled to the spindle fibres.
To know more about the Anaphase please click here :
https://brainly.ph/question/33956?
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