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.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.