Answer:
<h2>c. Division of these two groups occurred after the protostome developmental sequence appeared. </h2>
Explanation:
- Protosomes are such types of organisms in which the mouth part developed first during embryonic development.
- Those animals in which anus develop first are known as deuterostomes.
- This differentiation takes place during the embryonic development of the organisms.
- Since lophotrochozoan and Ecdysozoa both are protostomes animals and categorized on the basis of molecular evidence.
- Thus these two groups were formed after the appearance of the protostomes.
Nucleus, The “brains” of the cell, the nucleus directs cell activities and contains genetic material called chromosomes made of DNA.
Answer:
None of the choices would lead to all identical gametes.
Explanation:
Gametes are sex cells produced by sexually reproducing organims via a process of cell division called MEIOSIS. Meiosis is a cell division process which produces four (4) daughter cells (gametes), which are genetically different from the parent cell.
The difference in genetical content is as a result of a process unique to only meiosis called CROSSING-OVER OR RECOMBINATION. This process ensures that the genetic content of the gametes are altered. Hence, since gamete formation is done via meiosis, none of the scenarios in the option will lead to all identical gametes.
Answe
Explanation:
Excersice increases the cardiac and skeletal muscels strenght for maximum oxygen consumption for energy output.
It lowers the blood pressure and in prove RBC count for oxygen transportation and distribution.
It cut down risk of osteoporosis, by stimulating bone growth.
