What processes are involved in gametogenesis?
1) fertilization and zygote development
2) mitosis and production of diploid gametes
3) meiosis and differentiation of gametes
4) crossing over and embryonic development

The correct answer is 2) Meiosis and differentiation of gamets

Explanation:

Gametogenesis  is an important process of development which deals with the division and differentiation of diploid(2n number of chromosome) precursor cell to generate haploid gamets.

             During gametogenesis meiotic division of diploid gametocytes occur to form haploid gamets. The haploid gamets then fuses with each other to form diploid zygote.

correct answer is a. and d.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: