These statements from the options correctly refer to components of Mendel's five-element model -
a. The two alleles remain discrete.
b. The presence of an allele doesn't ensure that it will be expressed
d. Alternative forms of genes are called alleles.
e. Parents transmit genes to offspring.
For the formation of a diploid zygote, an haploid egg cell and a haploid sperm needs to join together to pass on the sets of genes they have.
Parents are able to pass their haploid set of genes through this cells to their offspring.
Every individual gets a copy of an allele of each gene or an from the two parents giving rise to diploid cell.
Learn more: https://brainly.com/question/13745064