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The sorting and recombining of genes during meiosis and fertilization usually leads to the production of

A) zygotes with the genetic information to produce only females
B)gametes with many copies of the same chromosome
C)offspring with some traits that did not appear in their parents
D)embryos with traits identical to those of all other members of the species

Respuesta :

TheStar9

Answer:

offspring with some traits that did not appear in their parents

Explanation:

marianaegarciaperedo

Different mechanisms can introduce genetic variation during gamete formation. Option C. Offspring with some traits that did not appear in their parents

What factors are involved in genetic variation during gamate formation?

There are three main mechanisms involved in genetic variation during gamete formation,

  • Crossing-over between homologous chromosomes (prophase 1),

  • The random lining of chromosomes (metaphase 1),

  • Independent assortment

Crossing over

The Crossing-over occurs between two homologous chromosomes.

During these events occurs an interchange of genetic information between the pair of chromosomes.

This interchange is what leads the daughter cells to be genetically different from the original one, providing new information to descendants.

Random arrangement

Once the homologous pairs get to the equatorial plane, they randomly aline with their kinetochores facing opposite poles.

The arrangement of tetrads is random and different in every cell going through the meiosis process. There is no predetermined order. Chromosomes of the homologous pair face any of the poles and then migrate forward to it.

When haploid cells -gametes- get formed, the number of variations in each cell differs from the other cells and depends on the chromosomes that compose them.

The order in the equatorial plane is what introduces variation into the gametes, being almost impossible for two gametes to have the same genetic charge.

Independent assortment

Independent assortment occurs when the alleles from two or more different genes distribute in gametes independently from each other.

In other words, a gamete receives an allele from a gene that does not depend on nor influence the allele of another gene in the same gamete.

This can only be applied to independent genes. An organism gets only one of the members of the chromatids pair of each parent.

According to this information, we can assume that the sorting and recombining of genes during meiosis and fertilization usually leads to the production of offspring with some traits that did not appear in their parents. Option C.

You can learn more about crossing over, independent assortment at

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