<span>Six phenotypes are possible in a one gene/three
allele system that displays codominance to each other with three alleles, a1, a2, a3.</span>
3 homozygous and 3 heterozygous
combinations. Each unique combination of two alleles results in a distinct
phenotype. Possible combinations are: <span>
a1/a1
a1/a2
a1/a3
a2/a2
a2/a3
<span>a3/a3</span></span>
Rover was the type of space probe designed to move around on the surface of a Moon or Planet. C. Rover
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Answer:
c.Alejandro’s nurturing parents. Alejandro’s genotype includes exceptional musical ability, but it’s his parents’ support of this ability that encouraged those genes to be expressed.
Explanation:
this is an examole of the influence of environment on gene expression
His nurturing parent's support aided his skill developments for professionalism. Generally parents have great influence on the children social skill developments through thorough supervision and monitoring of their general activities.
In addition, they are the social vessels for their child's social interactions, and therefore determiners of the experience to pass though in their immediate environments. Conclusively parents influences determine a child future.
In Alejandro case, the profession of both parents, the monitoring of his activities with musical instruments, and his regular practice(for the development of neural pathways) showed influence of environment on the expression of genotype, which aided his professionalism.
If he was not born to family of guitarist,with no access to a guitar he may not be a professional despite his musical genotype. thus interaction between gene and parental nurturing (environments) favoured this.
Answer:
The basement membrane or basal lamina on which the epithelium form, made by extracellular matrix.
Explanation:
The basement membrane is the layer underlies all epithelia that is made up extracellular matrix secreted by the epithelium cells that provide structural support to the structure of epithelia.
It forms the barrier between epithelial tissues therefore once a epithelial cancer penetrate this basement membrane it will spread to all underlying tissues.
Thus, the correct answer is - The basement membrane or basal lamina on which the epithelium form, made by extracellular matrix.
The basement membrane is form of extracellular matrix that underlies all epithelia. It provides structural support to epithelia and forms a mechanical connection between epithelia and underlying connective tissue.
The basement membrane, or basal lamina, is a sheet of proteins and other substances to which epithelial cells adhere and that forms a barrier between tissues.
Epithelial cancers may have the ability to penetrate through the basement membrane and spread to underlying tissues.
