Answer:
DNA is present as genetic material in all the living organism except some virus. DNA structure follows the Chargaff's rule in which states that the ratio of pyrimidines to purines is equal to 1.
So, amount of adenine will be equal to thymine. If adenine is 30% then thymine is also 30%. Total amount of DNA is 100%. Cytosine and thymine are also equal in the DNA molecule. The total amount of cytosine and guanine is 40%. The amount of cytosine is 20% and the amount of guanine is also 20%.
Thus, thymine is 30%, cytosine is 20% and guanine is 20%.
I believe it’s c but I’m not sure
Answer: the most reliable test for a mineral determined by the chemical composition
Explanation:
A mineral is an inorganic compound which can be obtained after the mining process. These minerals are produced beneath the earth crust by the geological processes.
The color of the minerals is the indicative of both physical and chemical properties. Two or more minerals can be similar in appearance on the basis of similarity in the outer color. But they are actually different.
Chemical tests can be done on minerals so as to know their actual color and can be used in distinguishing them. As various minerals can differ on the basis of their internal chemical composition, some impurities present in minerals can also provide them a color.
leptotene : homologus pairing is formed and chromosomes start to get closer to each other.
zygotene: synapsis is formed between homologus chromosomes which is apoint oattachment.
pachytene:crosing over occer that homologus chromosomes exchange THIER GENETIC METERIALS.
DIPLOTENE: chiasmata formation disapear which was formed in pachytene.
diakinasis:homologus chromosomes start to seperate from each other.
