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amm1812
3 years ago
9

En la meiosis, el entrecruzamiento (recombinación génica entre cromosomas) o crossing over ocurre durante la: *

Biology
1 answer:
DanielleElmas [232]3 years ago
3 0

Answer:

Profase I

Explanation:

La Profase I es la primera etapa de la meiosis en la cual el material genético se condensa para formar los cromosomas y se desarrolla el huso acromático (huso meiótico). El entrecruzamiento, también conocido como sobrecruzamiento o <em>crossing-over</em> (por su nombre en inglés), es un proceso que consiste en el intercambio de material genético entre cromátidas no hermanas de cromosomas homólogos. El entrecruzamiento se produce durante la Profase I, es decir, durante el período inicial del primer ciclo celular meiótico (meiosis I). El sobrecruzamiento tiene una importancia fudamental desde el punta de vista evolutivo ya que este fenómeno incrementa la diversidad genética de las gametas obtenidas mediante este proceso.

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The two main sources of genetic variation are shuffling and
S_A_V [24]
Meiosis. Sexual recombination. Crossing over. Independent assortment. Mutations.
The two MAIN sources would be genetic(sexual) recombination and mutations. Mutations allow for genetic variation, while genetic recombination allows for genetic shuffling. :)
5 0
3 years ago
Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. Assume all
PolarNik [594]

Answer:

C) all chinchilla

Explanation:

As we know that dominance of alleles for the coat color in rabbits goes like this:

                                          C+ > Cch > Ch > C.

  • The allele for full colour or agouti is  designated as C+.
  • Allele for mutant coat color  silvery- gray coat-chinchilla is Cch.
  • Allele for “Himalayan” coat is called ‘Ch
  • Albino rabbits have whole white coat and allele for this is c

If we cross homozygous chinchilla with homozygous chinchilla the cross will look like this:

P1:                                            chinchilla x chinchilla

P1:                                             Cch Cch    X   Cch Cch

F1:                                          Cch Cch       :       Cch Cch

Since all offspring have Cch Cchgenotype that is foe chinchilla phenotype  it means that all the offspring will have chinchilla phenotype that makes option C correct.

Hope it help


3 0
3 years ago
The At which point in the eukaryotic cell cycle does mitosis occur? Shows the
mel-nik [20]

Mitosis occurs after the G2 phase in the cell cycle.

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3 years ago
Dosis a alguien como el queso o la leche porque lo hago!
slava [35]

Answer:

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Explanation:

4 0
3 years ago
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Aneli [31]
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i hope i helped

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3 years ago
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