D. All of the above are correct
Answer:
DNA polymerase is an
enzyme that synthesizes DNA molecules
from deoxyribonucleotides, the building
blocks of DNA. These enzymes are essential
for DNA replication and usually work in pairs
to create two identical DNA strands from a
single original DNA molecule.
Answer:
380
Explanation:
The mentioned double-stranded DNA has 80 thymine nucleotides. This means that this DNA duplex has a total of 80 adenine bases. Since thymine pairs with adenine, the number of thymine and adenine is equal in a double-stranded DNA. Similarly, the presence of a total of 110 guanine nucleotides in the DNA indicates the fact that it has a total of 110 cytosine nucleotides. So, total number of nucleotides in this DNA double helix would be= 80 A + 80 T + 110 G + 110 C= 80 + 80 + 110 + 110 = 380.
Since Duchenne muscular dystrophy is X-linked recessive, it requires all of the X chromosomes in a human to take effect. This is what makes it recessive.
Since females have two X chromosomes, both of their X chromosomes must have the allele for Duchenne muscular dystrophy in order to be an active disease.
However, since males only have one X chromosome, they only need to have the allele for Duchenne muscular dystrophy on that single chromosome in order to be an active disease.
It is much more likely to get one affected X chromosome than it is to get two affected X chromosomes, therefore this disease is almost always restricted to males.
Answer:
The correct answer is maritime tropical air mass.
Explanation:
The maritime tropical air mass is most generally witnessed in the Southeast United States. This air mass generally occurs over the warm waters of the Gulf Stream and the Gulf of Mexico, where the moisture and heat are transmitted towards the overlying air from the waters present underneath. The warm water in this evaporates a huge quantity of water.
