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Consider the pedigree that follows for cutis laxa, a connective tissue disorder in which the skin hangs in loose folds. assuming that the trait is rare, what is the apparent mode of inheritance?

Sagot :

The apparent mode of inheritance of cutis laxa is recessive.

In the case of human beings, we use pedigree analysis to study the inheritance of certain traits.

In the analysis, the inheritance of a particular trait is represented in the family tree over several generations.

The pedigree chart given in the adjoining image is of cutis laxa, a connective tissue disorder in which the skin hangs in loose folds.

On observing the chart given in the image, we can draw the following conclusions:

  • In the first generation, the disorder is present in the first person from left.
  • In the second generation, the disorder is present in first person from right side.
  • This disorder is not present in parents of the person in second generation who is first from the right side.

The disorders that are recessive have a skipped generation, which means that this disorder is not present in one generation but passes on to the next generation.

Therefore this disorder is recessive as it is not present in generation I but is present in  generation II.

So, the apparent mode of inheritance of cutis laxa is recessive.

To know more about "Pedigree Analysis", refer to the link given below:

https://brainly.com/question/14667828?referrer=searchResults

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