<span>conjugation of two mature cells :)</span>
I do think Ancient Antarctica was situated in a different location from it's locations today because of continental drift, this is caused by the moving of the tectonic plates by the mantle which is under the Earth's crust due to the cooling and heating of magma (or lava, cant remember). this causes the plates to collide with each other, go in opposite ways or "swallow" one another (basically one plate goes under the other causing the one under to melt and reappear where two other plates are separating)
Options:
A. DNA contains a pentose sugar, nitrogenous bases, and a phosphate group
B. DNA is a molecule in structure
C. DNA contains thymine, cytosine, adenine, and guanine
D. Cytosine and guanine appear in equal proportions in DNA
Cytosine and guanine appear in equal proportions in DNA facts relates to Chargaff’s rule. Thus, the correct option is D.
<h3>
What are Chargaff rules?</h3>
The relationship between the nucleotides that make up DNA is described by Chargaff's rules: The amounts of Adenine (A) and Thymine (T) are equal, and the amounts of Guanine (G) and Cytosine (C) are equal (C).
The total number of purine bases equals the total number of pyrimidine bases in synthesis.
For more information regarding chargaff rules, visit:
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Many paleoanthropological studies have proved the migration of Homo sapiens from Africa to North America with the Out-of-Africa theory.
Explanation:
Many paleoanthropological studies have proved that Homo sapiens migrated out of Africa and arrived in the North America.
The Out-of-Africa theory or the trellis theory is a theory which describes the migration of Homo sapiens from Africa to other parts of the world.
The Homo sapiens developed structures like skull, postcranial skeleton, along with cognitive abilities became unique among other Hominids. The origin of our ancestors, H. sapiens, H. eructus were profoundly from Africa from the Hominidae zoological family.
During the pre-historic era, these hominids and their various species migrated to parts of Eurasia, like the Neanderthals and also to the Far East.
Finally, with all the other evolutionary forms slowly receding with the completion of migration processes, the Homo sapiens were formed with a standing man. Later the H. sapiens developed physically and cognitively and became skilled to do many activities. Then they migrated towards North America and then to South America.