Answer:
C. Late Precambrian era
Explanation:
Eon refers to two or more geological eras forms an eon. Eon is mainly divided into four eon namely Hadean, Archean, Proterozoic and Phanerozoic. Phanerozoic includes Palaeozoic, Mesozoic and Cenozoic era. Cambrian falls under the <em>Palaeozoic era </em>which was the major turning point the evolution period of geological time scale. The sudden increase in many diversity of animal phyla was evolved during this period. Also, the first land plant was appeared in this period which gave a promising fact that plants will grow on the apt seasonal conditions.
A karyotype views the nucleus of the cell and the inspects the number and the appearance of the chromosomes. This would mean that the nature of the problem could be
<span>A) extra chromosome; insertion
AND
</span>D) mutated chromosome; crossing over<span />
Answer:
Protein
Explanation:
It has nitrogen, hydrogen, oxygen, carbon, and sometimes small amount of sulfur
