Explain why random union of male and female is necessary law of segregation and independent assortment to occur ?
The random union of male and female gametes is necessary for the laws of segregation and independent assortment to occur because these laws rely on the mixing and shuffling of genetic material.
The law of segregation states that during the formation of gametes, two alleles for each gene separate or segregate from each other, so that each gamete carries only one allele for each gene. This process ensures that each offspring receives a copy of each gene from both parents. If the union of male and female gametes was not random, and there were deliberate pairing or selection of specific alleles, then the segregation of alleles would not occur as expected, and the laws of genetics would be violated.
The law of independent assortment states that the inheritance of one gene does not influence the inheritance of another gene. This means that the alleles for different genes segregate independently of each other during the formation of gametes. Again, if the union of male and female gametes was not random, and specific alleles were deliberately paired or selected together, then the independent assortment of genes would not take place, and the laws of genetics would be violated.
Hence, the random union of male and female gametes is necessary to ensure that genetic material is mixed and shuffled in a random manner, allowing for the occurrence of segregation and independent assortment as fundamental principles of inheritance.