Answer:
B. Molecular Systematics
Explanation:
First, let's review a few definitions. DNA, deoxyribonucleic acid: an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms, constructed of two nucleotide strands coiled around each other in a ladderlike arrangement with the side pieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine and pyrimidine bases adenine, guanine, cytosine, and thymine: the genetic information of DNA is encoded in a sequence of the bases and transcribed as the strands unwind and replicate. Molecular systematics is a scientific discipline that uses nucleic acids or other molecules to infer. evolutionary relationships between different species.
The shape of DNA is known as the double helix. The double helix is a description of the molecular shape of a double-stranded DNA molecule. Hope this helps!
Answer;
Kingdom Eubacteria
A unicellular kingdom that does not have a nucleus would belong in the kingdom Eubacteria.
Explanation;
Kingdom Eubacteria is the kingdom of prokaryotic, single-celled organisms that lack a membrane-enclosed nucleus and can be classified by shape.
Prokaryotes are organisms that lack nucleus and other membrane bound organelles, such as mitochondria. Unicellular means that the organism is made of one cell.
The blanks are both stem for stem cells and the process is cell differentiation
Answer:
pangea first appeared in the late paleozoic era.
