<span>E. polymerization in the 3′-to-5′ direction by DNA polymerase?</span><span>
"Important note: DNA is read in 3' to 5' direction whereas a new strand is synthesized in the 5' to 3' direction - this is entirely logical but is often confused" </span>
By looking for the presence of the germ layers and the primitive gut in the embryo
The answer is <span>B. In both oogenesis and spermatogenesis, the cells become haploid after meiosis I.
Gametogenesis is a process in which gametes are produced. Oogenesis is a process in which egg cells are produced and spermatogenesis is a process in which sperm cells are produced. Both processes include meiosis.
Original diploid cell (primary oocyte or spermatogonium) has 46 chromosomes. After meiosis I, there are two haploid cells. After meiosis II, there are 4 haploid cells because meiosis II is similar to mitosis. The difference between spermatogenesis and oogenesis is that those 4 cells after meiosis II in spermatogenesis are all sperm cells, and in oogenesis only one of them is egg cell.</span>
Bird skeletons are very delicate, and therefore, difficult to be preserved. The bones of the birds are soft. The small animals are very prone to physicochemical as well as biological decay. This is why the fossil record of bird is incomplete and well-preserved fossils of birds are rare to find, except at a few unusual sites.
Explanation:
carbohydrates, lipids and proteins are the type of biomolecules used to convert energy to ATP,
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