Answer:
Corrigiendo el error de Schwann y preparando el principio de Virchow, señaló que las células se multiplican por escisión de su núcleo, no por generatio aequivoca a partir del protoplasma originario. ... Según los historiadores Pagel (1945) y Ackerknecht (1957), parece que Remak precedió a Virchow en sus descubrimientos.
Explanation:
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Genetic Change in Viruses. Viruses are continuously changing as a result of genetic selection. They undergo subtle genetic changes through mutation and major genetic changes through recombination. Mutation occurs when an error is incorporated in the viral genome
They are thus known as the "supporting cells" of the nervous system. The four main functions of glial cells are: to surround neurons and hold them in place, to supply nutrients and oxygen to neurons, to insulate one neuron from another, and to destroy and remove the carcasses of dead neurons (clean up).
Crossing over contributes to genetic variation by exchanging chromosomal segments between non-sister chromatids of homologous chromosomes.
What is crossing over?
- Crossing over is the exchange and recombination of genetic components between the homologous chromosomes.
- This occurs in the pachytene stage of the meiosis-1 of the meiotic division.
- Crossing over occurs with the help of an enzyme and the enzyme responsible for crossing over is called Recombinase.
Thus, crossing over contributes to genetic variation by exchanging chromosomal segments between non-sister chromatids of the homologous chromosomes.
Learn more about crossing over: brainly.com/question/927405
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Answer:
An individual may carry a very beneficial genotype with a resulting phenotype that, for example, increases the ability to reproduce
Explanation:
