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What is the pattern of inheritance that follows a strict dominant/recessive relationship?

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Final answer:

The strict pattern of inheritance that follows a dominant/recessive relationship is known as Mendelian inheritance, which includes autosomal dominant and recessive, as well as X-linked dominant and recessive patterns.

Step-by-step explanation:

The pattern of inheritance that follows a strict dominant/recessive relationship is known as Mendelian inheritance, which includes both autosomal dominant and autosomal recessive traits. Autosomal dominant inheritance occurs when only one copy of a dominant allele is necessary for the expression of the trait, meaning an affected individual has a 50 percent chance of passing the disorder to their offspring, as shown in Figure 28.26 representing a disorder such as neurofibromatosis. On the other hand, Autosomal recessive inheritance requires two copies of a recessive allele for the trait to be expressed. This is illustrated in Figure 28.27, where two carrier parents have a 25 percent probability of having an affected child, a 50 percent probability of having a carrier child, and a 25 percent probability of having a child that is unaffected.

Another type of inheritance is X-linked dominant or recessive inheritance, which involves genes located on the X chromosome of the 23rd pair. In Figure 28.28, an X-linked dominant pattern changes depending on whether the father or mother is affected. For X-linked recessive patterns, such as those outlined in Figure 28.29, male offspring have a 50 percent chance of being affected if the mother is a carrier, while female offspring would either be carriers or unaffected, given that they have two X chromosomes.

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