Natural system is former when various components get grouped together for a particular function
In biology, the inner lining of tubular structures is called a lumen.
This can refer to numerous tubular structures in the body, such as the lumen of the veins and arteries, the lumen of the intestines or the tubes in the kidneys.
This term can also be used to describe a space defined by membranes of cell organelles such as the lumen of the mitochondria, the Golgi apparatus, and others.
Without the answer options I cannot tell you the answer exactly, however X linked disorders are found only on X chromosomes and are indicated by a lowercase letter next to the X. Xr would be an example of the notation. A male has one X chromosome and one Y chromosome, where females have two X chromosomes.
The allele combination of a male with an x linked recessive disorder would look something like XrY.
A mating between a purebred purple-flowered pea plant and a purebred white-flowered pea plant would produce a Hybrid.
In human genetics, assortative mating is a type of nonrandom mating in which pair connections are created based on phenotype (observable characteristics).
A statistical link between genotype and phenotype predicts a physical characteristic in a person or an anomaly in a patient with a specific mutation or a collection of mutations that are related to it.
The genotype of a purebred purple flowered pea plant will be PP
while the genotype of purebred white-flowered pea plant will be pp.
on crossing
PP X pp
Pp, Pp, Pp, Pp (offspring)
hence all the offspring produced will be hybrids.
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