Question

Crossing over results in recombinant traits.

• A. True
• B. False

Answer 1

The correct option is A

True

Genetic variation comes from crossing over which happens during prophase I of meiosis. In prophase I of meiosis, the replicated homologous pair of chromosomes come together in the process called synapsis, and sections of the chromosomes are exchanged. After crossing over, the resultant chromosomes are neither entirely maternal nor entirely paternal, but contain genes from both parents. All of this jumbling and mixing allows for a nearly infinite number of allele combinations.