Answer:
B. 30%T, 20%G, 20%C
Explanation:
The Chargaff rule states the relationship in DNA molecules based on nucleotide composition. It is based on the fact that in a double-helical DNA molecule, a purine base of a strand always pairs with a pyrimidine base of the other strand. According to the Chargaff rule, the number of adenine bases equals the number of thymine bases, and the number of guanines equals the number of cytosines.
According to the given information, the percentage of adenine (A) in the DNA of a particular organism is 30%. This means that the DNA of this organism would have 30% of thymine nucleotides. Out of total 100% DNA nucleotides, the proportion of guanine + cytosine nucleotides= 100- (30 + 30) = 100-60= 40.
In a double-helical DNA, the number of guanines equals the number of cytosines. Therefore, the percentage of guanine and cytosine nucleotides each= 40/2=20%
The boy or a boy put it in a translation
Answer:
The sneeze centre sends signals to the parts of your body that need to work together to help you sneeze. Your chest muscles, diaphragm, abdominals, vocal cords and the muscles in the back of your throat all work together to help you expel the irritant. Muscular, immune, nervous, respiratory.
Explanation:
I believe <u>hydrologic and Rock Cycles </u>is the right answer.
*Sickle cell disease is a constitutional corpuscular hemolytic anemia related to an abnormal structure of the globin chain. It is an autosomal recessive disease, which means homozygosity is necessary to fully express the illness.
*It corresponds to the synthesis of an abnormal hemoglobin, HbS, which is different from normal Hb (HbA).
*The S allele (located in the chromosome 11), responsible for the anomaly, is especially widespread in the African continent, it is also found in other regions of the Mediterranean.
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*Mutation GAG to GTG leading to the substitution Glutamine by a valine in position 6 of the chain of the globine.</span>