The human pedigree shown here is for an inherited form of deafness caused by a recessive allele (d). drag the labels to the pedigree to identify the genotypes of individual family members. if you can't tell with certainty whether an individual is homozygous dominant or heterozygous dominant for the trait, place the label "dd or dd" in that box.

The pedigree is shown below. The female are represented in circles, the coloured circle shows the female to be deaf. The circle which is not coloured shows the female to be a carriers or normal.

The rectangle represent the males in this pedigree. The coloured rectangle shows the male which are deaf. The rectangle which are not coloured show the male which are normal or carriers.

. the sierra madre fault zone of southern california

. the san andreas fault california

d. changes in climate and historical records

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