Which of the following statements about homologous chromosomes is correct?
a. each gene is at the same locus on both chromosomes.
b. they are two identical copies of a parent chromosome which are attached to one another at the centromere.
c. they always produce identical phenotypes.
d. they are chromosomes that have identical genes and alleles.

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:

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.