Question

During meiosis, genetic recombination may occur more than once through the process of ____________________, resulting in an increase in genetic variability. A) transcription B) crossing over C) allele sequencing D) frameshift mutation

Answer 1

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

Answer 2

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

Answer: crossing over (aka recombination)