In sporadic cases of retinoblastoma, only two gene mutations are thought to be necessary in the same cell for a tumor to develop. this happens when an organism inherits a mutant allele and a wild-type allele forms the parents. when the wild-type allele is mutated, resulting in tumorigenesis, this process is called, . metastasizingb. attenuationc. gain of heterozygosityd. loss of heterozygositye. recombination

D) loss of heterozygosity

Explanation:

In sporadic cases of retinoblastoma, only two gene mutations are thought to be necessary in the same cell for a tumor to develop. This happens when an organism inherits a mutant allele and a wild-type allele forms the parents. When the wild-type allele is mutated, resulting in tumorigenesis, this process is called loss of heterozygosity.

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation: