The process is likely to be triggered by the formation of the layers. Zygote is the structure that forms when a sperm fertilizes an egg, the zygote then divides many times by the process of mitosis to form an embryo. That is, it forms two cells, then four, then eight and so on, up to the eight stage the cells are identical and are called embryonic stem cell, which then develop into any specialized cells type by differentiation, that the growing embryo needs, such as the nerve cells, blood cells, among others.
Answer:Aging. ...
Family history. ...
Smoking. ...
Alcohol. ...
Sunlight and ionizing radiation. ...
Organic and inorganic chemicals. ...
Viruses and Bacteria. ...
Hormone therapy.
Explanation:
<span>The nurse should anticipate assessment findings of a hallucinogenic drug. This can include effects that are highly variable and unreliable, where the drug alters cognition/perception, creates a sense of detachment from environment/self and can cause severe and scary hallucinations.</span>
Answer:
I think the answer is of second one.
Answer:
Explanation:
The answers to your questions about genetic recombination are:
Independent assortment happens during metaphase I.
Fertilization happens during sexual reproduction.
Independent assortment is random chromosome alignment resulting in variation.
Crossing over happens during prophase I.
Fertilization fuses gametes to form offspring with genes from each parent.
Crossing over is the exchange of genetic information between non-sister chromatids.