Answer:
The sugar and phosphate group make up the backbone of the DNA double helix, while the bases are located in the middle.
Explanation:
Answer:
In the given case, the flowers A and B are temporally reproductively isolated from each other.
Explanation:
Reproductive isolation takes place when populations cannot mate efficiently with each other. As a consequence, slight genetic differences originate within the populations. With time, the genetic differences gathered in the isolated populations results in the formation of various kinds of different species. In the given case, even though both the flowers A and B are the similar species, the two different flowers bloom at distinct times, resulting in a time-imposed or temporal barrier to reproduction.
Answer:
ectoderm would be the answer.
Answer:
The importance of the AUG and UGA bases lies in the fact that the first one is a start codon and the second one is a stop codon, respectively (option a).
Explanation:
Codons or triplets are sequences of three nitrogenous bases, in the mRNA, that determine the synthesis of a specific amino acid.
- <em>AUG </em><em>is called the </em><em>initiation or start codon</em><em>, and is usually at the beginning of a peptide synthesis, in addition to encoding the amino acid methionine.
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- <em>UGA</em><em> is a</em><em> termination or stop codon</em><em> found at the end of a petid chain when it is complete. UAA and UAG codons are also STOP or termination codons and, together with UGA, do not code for amino acids.</em>
The biological importance of start and stop codons is to initiate the synthesis of a protein and to stop the addition of amino acids when their size is adequate.
