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77julia77 [94]
3 years ago
5

What would be accomplished if crossing over occurred between sister chromatids? explain

Biology
1 answer:
S_A_V [24]3 years ago
5 0

Answer:

Since sister chromatids are identical, genetic variation will not be produced in the daughter cells.  

Explanation:

Sister Chromatid Exchange (SCE):

  • This is a rare recombination phenomena that entails recombination and crossing over between two sister chromatids.
  • This is contrary to normal recombination in which crossing over between non-sister chromatids takes place, producing genetically variable daughter cells.
  • Exchange of genes between sister chromatids does not produce genetic variations.
  • SCE is actually an indicator of chromosomal instability and DNA repair and replication malfunction.
  • SCE is observed to be increased in pathological conditions like Bloom syndrome (genetic disorder) and Behcet disease (chronic inflammatory disorder) etc.

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Answer:

d. being diploid means that humans cannot mask the effects of recessive alleles. humans always show both alleles in their phenotypes and genotypes

Explanation:

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