Question

Red-green color blindness is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree.


A pedigree is shown. Sam, Bella, Joshua, and Tim have filled-in shapes. Lisa and Monica have half-filled shapes.


Which individuals in the pedigree are identified and labeled carriers for red-green color blindness?


Lisa and Monica

Sam, Tim, Bella, and Joshua

Ben, Jenny, Mike, Carol, Katie, and Chris

Ben and Lisa

Answer 1

Answer:

Mendel crossed two plants that were heterozygous for purple flower color. Which genotypes could he have used to represent the cross?

B. -- Pp ´ Pp

The pedigree traces red-green color blindness.

mc021-1.jpg

Which family members have red-green color blindness?

A -- Sam, Tim, Bella, and Joshua

Unattached earlobes is a dominant trait, E. A parent who is homozygous for unattached earlobes is crossed with a parent who is homozygous for attached earlobes. What is the genotypic ratio of their offspring?

A. -- 100 percent Ee

Explanation:

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