Answer:
B. diagrams the evolutionary history of a particular group of organisms.
Explanation:
Phylogenetic trees represent hypotheses about the evolutionary relationships between a group of organisms.
A phylogenetic tree with the morphological (body shape), biochemical, behavioral or molecular characteristics of species or other groups can be constructed.
When building a tree, we organize the species into nested groups based on shared derived characters (characteristics different from those of the group's ancestor).
Gene or protein sequences can be compared between species and used to build phylogenetic trees. Nearby species usually have few differences in their sequences, while less related ones tend to have more.
Explanation:
The wobble hypothesis states that the first two bases within a codon for an amino acid have an exact pairing with anticodons of tRNA. However, the pairing of the third bases may vary or wobble- thus a tRNA can recognise multiple codons.
3'-GUI-5' can recognise CAU, CAC, and CAA
- wobbling occurs at the 5' end
- I represents the wobble anticodon
- purines pair up with pyrimidines in base pairs
Further Explanation:
The nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and protein synthesis.
Basic makeup: C, H, O, P; they contain phosphate group 5 carbon sugar does nitrogen bases which may contain single to double bond ring.
Codons are three nucleotide bases encoding coding and amino acid or signal at the beginning or end of protein synthesis.
RNA codons determine certain amino acids so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Cysteine and Uracil) Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.
Learn more about transcription at brainly.com/question/11339456
Learn more about DNA and RNA brainly.com/question/2416343?source=aid8411316
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Answer:
It is "The opening of flask is pointed in an unsafe direction"
Explanation:
The students were there in the lab to perform practical without obeying the safety rules. The most reasonable basis for teacher's warning here, in this case, is the flask which is pointed in an unsafe direction. It is not specified whether the flask is containing any chemical or not but even if it is empty, it might just fall and break and create injury to anyone present in the lab because, the students are also not wearing proper laboratory wear in accordance to the safety rules which include lab coats, gloves, eyewear, etc. Also, some Students have not tied their hair and more importantly the flasks carrying liquids are not labeled. All of these things might end up in a critical situation for which the teacher warned students about it all.
Answer:
The correct option is b. DNA ligase
Explanation:
DNA ligase is an enzyme that joins DNA fragments. If two DNA fragments or molecules have complementary ends, the ligase can join them together to form a single and intact DNA molecule, without interruptions. This is because the ligase enzyme seals the space between the molecules to form a single DNA fragment.
The others enzymes have different functions:
DNA helicase is characterized by separating DNA from double strands into single strands and acts in DNA replication.
ATP methylase plays an important role in DNA replication when determining the beginning of replication that has already been replicated or not.
DNA polymerase is an enzyme that is responsible for catalyzing the polymerization of the new strand of DNA during the replication of this molecule.
Answer:
Explanation:
Generation Time. In eukaryotic organisms, the generation time is the time between the same points of the life cycle in two successive generations. For example, the typical generation time for the human population is 25 years.
