Echinoderms, like chordates, are deuterostomes and are therefore thought to be the most closely related of the major phyla to the chordates
Answer: d). UAG
Explanation: During translation, DNA sequence is first of all copied into an mRNA in a process known as transcription. This is the first step in protein synthesis. The mRNA is used as a template in protein synthesis. The genetic information encoded in an mRNA are in form of codons. A Codon is a three nucleotide sequence that codes for a specific amino acid. These codons are recognized by anticodons in a tRNA molecule. An anticodon is a three-base sequence on the tRNA through which tRNA base pair with mRNA.
From the DNA sequence above, 3'TAG will first be transcribed into an mRNA sequence AUC, then the anticodon on the tRNA will be UAG. The mRNA codon-tRNA anticodon base pairing follows the Watson and Crick base pairing in which Adenine pairs with Uracil and Cytosine pairs with Guanine.
Answer:
The correct answer will be option-Cells can generate from nonliving matter.
Explanation:
Rudolf Virchow is known for modifying the cell theory proposed by the Schleiden and Schwann in 1839. He added to the existed theory and suggested that all living cell come from the pre-existed cells.
But this hypothesis was disproved after the Miller and Urey performed an experiment in 1953 and demonstrated that cells were originated from the non-living matter present in the atmosphere during primordial time.
This fact disproved the hypothesis of Virchow ans thus is the correct answer.
<span>The complete question includes these choices: a. vitamin B6
b. calcium
c. water
d. protein The correct answer is c. water. Water has a peculiar chemical structure, with special and unique properties that are crucial for chemical reactions (eg good dissolving properties, resistance to pressure and fluidity throughout changes of state).</span>
Answer is B.
Overfishing would lead to a bottleneck effect, as large numbers of fish are removed from a fish population. Population size has a major effect on the amount of genetic diversity. The greater the population, the greater genetic diversity. Due to overfishing, the population would become smaller, which would reduce genetic diversity. So the answer is B.
