Answer:
it is an attempt to explain how or why things happen in the manner observed
Explanation:
Answer:
The addition of a chromosome in an egg cell.
Explanation:
Mutation may be defined as sudden, heritable change in the DNA sequences. The mutation may be caused during the DNA replication or may be caused by the environmental factors.
The mutation that occurs in the gametic cells may pass down from parents to their offspring. The addition of an extra chromosome in egg cell will be inherited in the next generation.
Thus, the correct answer is option (C).
Answer:
a. subarachnoid hemorrhage
Explanation:
Cerebral aneurysm is an intracranial weakening of an arterial blood vessel in the brain giving rise to a blister filled with serous fluid(blood). Due to this weakening area, if par-adventure the blister bursts, it can result to subarachnoid hemorrhage. Subarachnoid hemorrhage is mostly accustomed to bleeding into the space surrounding the brain which is caused by ruptured Cerebral aneurysm.
Vertebrate Nervous Systems
