Answer:
One allele is on one chromosome, and the other is in the same position (locus) on the homologous chromosome.
Explanation:
The genotype of an organism refers to the genetic makeup or complete set of genes. The genes control the trait of an organism and exist in an organism in their alternative form called alleles.
Since the alleles are the alternative form of a gene, therefore, they must be present at the same position called a locus.
These alleles are present on the homologous chromosome in which each homologous chromosome is contributed by each parent.
Therefore when the genotype is aa then a and a allele will be present on homologous chromosomes in the same position.
Thus, the selected option is correct.
Mitosis doesn't bring genetic variety to species. Mitosis just copies DNA from one cell to a new one.
Mitosis has one cycle of cell division, in which cells replicate.
Meiosis has two cycles of cell division, in which sex cells are created.
These sex cells are not used to heal the body.
Transfer RNA (tRNA) – a type of RNA that is folded into a three-dimensional structure. tRNA carries and transfers an amino acid to the polypeptide chain being assembled during translation. translation – the process in which a cell converts genetic information carried in an mRNA molecule into a protein.
They are at the beginning because they absorb the energy from the sun and the energy or the sun gets transferred by each organisms