Answer:
A purine always forms a complementary base pair with a pyrimidine.
Explanation:
Purine bases such as Adenine pair specifically with Thymine , a pyrimidine base forming two bonds; just as Guanine pair specifically with Cytosine forming three bonds.
This specific base pairing are complimentary in nature and grants stability to the DNA.
The hydrosphere i believe, hope this helps!
An unspecialized cell that can give rise to one or more different types of specialized cells, such as blood cells and nerve cells. Stem cells are present in embryos and in various tissues of adult organisms
The more sunlight there is, the warmer the water gets. The warmer water is, the less dissolved oxygen the water contains. The cooler water is, the more dissolved oxygen it contains. Some sunlight is still needed, as water that is too cool will form ice.
Answer:
False. M phase is shorter than interphase; cells spend most of their time in interphase.
