This statement is true.
In the case of autosomal dominant disease, the person is either homozygous (which is very rare) or heterozygous. On the molecular level, either the mutation produced a new deleterious protein for the organism, or the mutation affected an existing protein in the physiological state and that a 50% activity is not enough to compensate for the needs. of the body.
In case of autosomal recessive disease, the sick person is always homozygous. If the two loci each have a different mutant allele, it is called a "composite heterozygote". People with autosomal recessive inheritance disorder have "mandatory heterozygote" parents.
of course we found 78 chrosomes in dog's blood cells
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Coal contains sulfur and other elements, like dangerous metals (mercury, leads, and arsenic) that get into the air when coal is burned. Burning coal releases particulates and cause an increase in air pollution, it also emits the amount of CO2 (carbon dioxide) in the atmosphere
