All methods of prenatal diagnostics can be divided into biological and physical. The physical methods are X-ray examination of the embryo,... View Article
The molecular-genetic methods help to describe changes in the structure and functions of nucleic acids. Its include methods of gene extraction,... View Article
The biochemical methods are applied for diagnostics hereditary metabolic exchange diseases. They are determined on three levels: molecular... View Article
In the autosomal dominant pattern of inheritance, the mutated trait appears in a heterozygous state in individuals of both sexes. The trait... View Article
Outbreeding are crosses between unrelated individuals. The unrelated individuals are those who have no relatives in 6 or more generations.... View Article
The combinative diversity is the formation of new allele combinations because of the crossing over in gene recombination and meiosis. New gene... View Article
The trait formation is determined by not only the existence of a specific gene in the genotype. In some cases, the trait may be formed only by a... View Article
The genetic material can be obtained by gene cleavage from donor cells or by its synthesis. We can get genes in chemical reactions or from rRNA... View Article
Some statements are as follows - Genes have definite loci in chromosomes Inside the gene, there is recombination and mutation There are... View Article
The movements of the body are carried out by the interaction of the skeletal and muscular systems. This is why they are grouped together often as... View Article
The thalamus is involved in - It assists in the production of sensations and their neurons relay impulses to the cerebral cortex from the... View Article
The parts of a typical reflex arc are - Sensory neurons or the afferent neurons which are cells transmitting impulses towards the central... View Article
The muscle tissues have the following characteristics enabling smooth conduction of functions, thus homeostasis - Contractility - the ability... View Article
Orbits are pyramid-shaped spaces that comprise the eyeball and linked structures. It is formed by the bones of the skull. The orbit has 4 walls... View Article
The skeleton of the newly formed embryo comprises a fibrous membrane and cartilage structures that eventually are substituted by the bones... View Article
Nails are composed of Keratin (hard) and are hair-like modifications of the epidermis. It comprises flat plates on the dorsal surface of the... View Article
Carbohydrate parts of some large molecules expand beyond the outer surface of membranes which forms a layer referred to as the glycocalyx. This... View Article
Receptor proteins are present in the cell membrane and are perceptive to the presence of particular extracellular molecules known as ligands.... View Article
Anchoring proteins are the membrane proteins that attach the cell membrane to other structures thus stabilizing its position. Within the cell, a... View Article
A) phytochrome B) gibberellin C) auxin D) cytokinins Answer:C) auxin Explanation: When plants are exposed to the light unilaterally. The auxin... View Article
