Spermatogenesis is the process in witch spermatozoa are produced from male primordial germ cells by way of mitosis and meiosis.
Oogenesis is the process by which the female gametes, or ova, are created.
Unfortunately this question is incomplete as it is a multiple choice question. The following options are provided:
<span>A) body cavity between body wall and digestive system
B) number of embryonic tissue layers
C) type of body symmetry
D) presence of Hox genes
E) degree of cephalization
The answer is D: presence of Hox genes
</span>
Hox genes are a group of genes that determine the basic structure and orientation of animals.
Answer:
The two main forms of eye makeup were grepond eye paint and black kohl. The green eye paint was made of malachite, a copper carbonate pigment, and the black kohl was made from galena, a dark grey ore.
It will cause vasodilation of blood vessels in the brain.
CO2 is one of the metabolic end products that can alter the
tone of the blood vessels in the brain. High CO2 levels cause vasodilation,
which may cause headache, whereas low CO2 levels cause vasoconstriction, which
may cause lightheadedness. The statements included in the other options are
incorrect effects.
Answer:
RNA is Ribonucleic acid
mRNA
rRNA
tRNA,
Explanation:
mRNA, or messenger RNA, that serve as temporary copies of the information found in DNA; rRNA, or ribosomal RNA, that serve as structural components of protein-making structures known as ribosomes; and finally, tRNA, or transfer RNA, that ferry amino acids to the ribosome to be assembled
