Studies on heritability concern the degree to which variation in the observable traits of a person, or , can be attributed to variation in the , or underlying genetic structure.

Studies on heritability concern the degree to which variation in the observable traits of a person, or phenotype, can be attributed to variation in the genotype, or underlying genetic structure.

Explanation:

The differentiation between genotype – phenotype is taken from genetics. Genotype is the complete genetic knowledge about an organism. Phenotype is the specific observable features of an organism such as morphology, evolution, or behavior. This contradiction is central to the analysis of trait inheritance and its evolution.

The potential genotypes for the flower-colored gene were red-red, red-white and white-white, for instance, in pea plants. Phenotype is the physical expression of the allele-shaped mutation (genotype) of a species.

one centimetre is equal to 0.01 metres

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!