What is the significance of the crossing over that occurs between homologous chromosomes during meiosis ?
A. It causes chromosomes to condense.
B. It maintains the diploid number of the species.
C. It reduces chromosomes from 2n to n.
D. It results in genetic variation due to new gene combinations.

Option D. It results in genetic variation due to new gene combinations.

Explanation:

Crossing over that occurs between homologous chromosomes during meiosis is responsible for the genetic variation due to new gene combinations. Crossing over is a process in which parts of chromosomes are exchanged between two different chromatids when gametes are produced.

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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