A pedigree chart is a diagrammatic representation showing the occurrence and appearance of phenotypes of a particular gene/traits and its ancestors from one generation to the next establishing relationships between individuals in a family.
Using the letter A for a dominant allele and a for a recessive allele, the genotype of individual I-1 is Aa.
- In the key pedigree nomenclature, an individual marked with the black ink is affected with the trait (and this trait is dominant - A).
- Looking at the F1 generation, there are males affected and females as well.
- For inheritance of the trait, just one copy is enough to become affected.
- Therefore, the male parent is heterozygous for the trait and the female normal (aa) to enable the production of both affected and non-affected individuals.
Learn more about pedigrees: brainly.com/question/318443
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The parasympathetic nervous system causes this relaxed state it allows the body to reach a form of homeostasis this relax and digest is very important for repair and digestion
Bones are made up of Calcium Phosphate given by the chemical formula, 
. When bones are kept in Hydrochloric acid, given by the chemical formula, HCl, they become soft because the calcium compound present in the bones changes its form. The following double displacement reaction takes place when the bones are kept in HCl,
---> 
Calcium chloride is water soluble, and gets washed away. This makes the bone thin and soft.
