<span>Because of semi-conservative replication in DNA synthesis, One of the strands of the new DNA molecule is original and one of the strands of the molecule is composed of new nucleic acids.</span>
I think its a , but double check because i dont want it to be wrong .
Answer:
Atmospheric nitrogen is "fixed" by bacteria.
Explanation:
Nitrogen gas (N2) is the most abundant in the earth's atmosphere, representing 79% of air volume. In organisms, nitrogen atoms are part of several organic substances, such as proteins and nucleic acids. However, most living things cannot use nitrogen in the N2 molecular form. Only a few species of bacteria are able to use it by incorporating nitrogen atoms into their organic molecules and making it available in other molecular forms for use by various species through a process called Biological Nitrogen Fixation. Similarly, the bacteria that perform the fixation are called nitrogen fixers.
D. <span> Heterozygous with brown leaves
It is heterozygous because the alleles are differen. Bb have different alleles, B and b. As opposed to homozygous which have same alleles, B and B or b and b.
Since B is dominant in the gene expression, and B represents brown, the dominant trait will mask the recessive one, b, and you will have a brown leaf.
Hope this helps. </span>
