All of the following are effects of crossing over of homologous chromosomes during prophase i of meiosis with the exception of a) increased genetic variety. b) increased number of chromosomes in the offspring. c) the appearance of new phenotypes in the offspring. d) possible harmful mutations from cross-over errors.

Answer;

B) increased number of chromosomes in the offspring.

Explanation;

-Cross over is a process that takes place during meiosis. It occurs when homologous chromosomes pair up and the segments of chromosomes are exchanged between non sister chromatids, resulting to recombinant chromosomes.

-The process causes genetic variation among organisms due to exchange of genetic material. In addition to increased genetic variation, cross over may results to the appearance of new phenotypes in the offspring. Also cros-over mutations may cause harmful mutations.

ucd e e. rr. t t t t t t. to

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides