Answer:
Explanation:
The key difference between protostomes and deuterostomes is the fate of the blastopore during their embryonic development. The blastopore in a protostome develops into a mouth, where as the blastopore in deuterostomes develops into an (a n a l) opening.
Protostome- Blastopore develops into a mouth. Spiral, determinate cleavage. Schizocoelous formation of the coelom. Annelids, mollusks, and arthropods
Deuterostome- Blastopore develops into an anus. Indeterminate cleavage. Radial cleavage pattern during early development. Echinoderms and the chordates.
Both- Distinct evolutionary lines of coelomates. Complex skeletons that allow them to be highly mobile. Bilateral symmetry. Triploblastic.
She determined it refering to the head of normal shape of normal size for the persons age
Answer:
Basically, mitosis is a process by which is duplicated genome in a cell is separated into two halves that are identical in nature. Cytokinesis is the process where the cytoplasm of the cell divides to form two 'daughter' cells.
Explanation:
This is called an uncomformity.
Answer: Valves in the veins
Explanation: The flow of the blood inside the body takes place through the veins and arteries. The oxygenated blood from the heart is supplied to the different parts of the body.
The blood flows from the capillaries to the venules and from there to the veins. The blood moves in the veins by the rhythmic movement of the smooth muscles in the body.
Most of the blood moves against the gravity so there is a chance that it can backflow so to prevent this there are valves in the veins known as one way valves.
