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____ [38]
2 years ago
10

During meiosis, genetic recombination may occur more than once through the process of ____________________, resulting in an incr

ease in genetic variability. A) transcription B) crossing over C) allele sequencing D) frameshift mutation
Biology
2 answers:
xz_007 [3.2K]2 years ago
6 0

The right answer is B) crossing over.

Crossing-over is a genetic phenomenon that occurs during meiosis and contributes to genetic mixing during reproduction (genetic recombination).

At the end of prophase 1 (early metaphase 1) of meiosis, the homologous chromosomes (i.e. of the same pair) overlap thus forming characteristic features called "chromatid tetrads" and exchange fragments of chromatids. The result is the intra-chromosomal mixing of the alleles

IrinaVladis [17]2 years ago
6 0
<span>During meiosis, genetic recombination may occur more than once through the process of ____________________, resulting in an increase in genetic variability.

</span>Answer: crossing over (aka recombination)
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Ligand A and ligand B can cause same cellular responses in a cell when they are attached to different receptors.

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If two same ligands are attached to two different receptors, two different responses will occurs. Such type of response is present in acetylcholine, while when two different ligands attached to two different receptors, same response will occur. This type of response is present in glucagon and epinephrine etc. ligands are responsible for controlling the transcription process when it binds or attached to the DNA molecule of the cell.

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