Answer:
1. Meiosis 1.
2. Meiosis 2.
3. End.
4A. The chromosome theory of inheritance states that chromosomes are the main carriers of the genetic factors responsible for inheritance.
B. Body cells have two sets of chromosomes while sex cells have one set. Therefore, when two sex cells meet, they form an embryo with two copies of each chromosomes thereby producing a body cell with the exact number of chromosomes. In essence, meiosis maintains the right number of chromosomes of body cells by creating half the number of chromosomes of sex cells.
C. Meiosis.
Explanation:
Answer:
B. A sperm cell
Explanation:
Meiosis creates gametes/sex cells, such as the sperm and egg.
So, sperm cells are formed by meiosis.
Meiosis doesn't create fertilized eggs, it instead creates normal egg cells.
Meiosis also doesn't create heart and bacterial cells because those are made in mitosis.
So, B is the correct answer.
Answer:
Explanation:
Parasympathetic Nervous System. The parasympathetic nervous system is an anatomically defined division of the autonomic nervous system, being that part whose motor components run in cranial nerves III, VII, IX, and X and in the sacral nerves.
<span>No.The involuntary muscles of the muscular system are not striated or furrowed.
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<span><span>These muscles that are
not striated are very smooth to the sight which is why they are also
called Smooth muscles.</span> Involuntary muscles
are not striated. Even among the striated muscles that are voluntary,
the heart which is also a muscle, is involuntary.
On the other hand the striated muscles, which
are voluntary are highly fibrous and their primary function is to move
the body voluntarily, and producing heat as a result of this muscle
action.
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