Meiosis II will have 
chromosomes.
Meiosis:
- Somatic cells divide during meiosis, a process in which the genetic makeup or quantity of chromosomes in the daughter cells is maintained.
- In sexually reproducing organisms, a kind of cell division known as meiosis results in a decrease in the number of chromosomes in gametes (the sex cells, or egg and sperm). Human body cells, also known as somatic cells, have two sets of chromosomes and are diploid (one from each parent).
- A single cell splits twice during the meiosis process, resulting in four cells with half the original genetic material. These cells—sperm in men and eggs in women—are our sex cells.
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The answer is <span>B: G2 checkpoint.
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<span>Cell cycle checkpoints are control mechanisms necessary for proper cell division. In the cell cycle, there are two checkpoints: the G1 checkpoint and the G2 checkpoint. The G1 checkpoint is right before the S phase, and G2 checkpoint is right before the M phase.
</span><span>The G2 checkpoint is a DNA damage checkpoint and if DNA is damaged, entering the cell cycle is delayed before mitosis (M phase).</span><span>
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Answer:
d. 1/2
Explanation:
According to this question, PKU (Phenylketonuria) is a recessive condition in humans. A normal human must possess at least a dominant allele in the gene.
In a situation where two normal parents produce a child with PKU. This means that both parents are heterozygous for the condition i.e Pp × Pp. Hence, the heterozygous male (Pp) will produce gametes in the following proportion: P (1/2) and p (1/2).
This means that the probability that a sperm from the father will contain the PKU allele (p) is 1/2 or 50%
Answer:
Letter B - Electrolytes.
Explanation:
Nerve signal conduction and muscle contraction depend on electrolyte balance to occur.
Sodium, potassium, and chlorine, for example, are typical electrolytes found in the body that are present in the nerve impulse due to the process of cellular depolarization.
Basically, for the conduction of the nerve signal to happen, it must happen the depolarization of nerve cells that control muscle contraction and in this process, there is mainly sodium and potassium change, while for actin-myosin system activation and finally muscle contraction, We mainly need calcium.
So, in general, an electrolyte balance is required during both processes.
