Achondroplasia Is a Form of Dwarfism in Humans

question 1

Multiple Choice

Achondroplasia is a form of dwarfism in humans. It is caused by a mutant allele of the fibroblast growth factor receptor gene (FGFR) that produces an overactive protein. Having one copy of the mutant allele results in dwarfism. Two copies of the mutant allele results in death before birth.
-Based in this information, what can you infer about the inheritance of the FGFR alleles?

• A)The mutant FGFR allele is pleiotropic.
• B)Some achondroplastic dwarfs are heterozygous for the mutant allele and some are homozygous.
• C)The wild-type and mutant FGFR alleles are codominant.
• D)The mutant FGFR allele shows incomplete penetrance.

---

Definitions:

Environmental Quality

The state or condition of the environment based on various factors, including pollution levels, cleanliness, and the presence of healthy ecosystems.

Algal Blooms

A rapid increase in the population of algae in water systems, often resulting in water discoloration and depletion of oxygen levels.

Lake Victoria

is one of the largest freshwater lakes in the world, located in East Africa and serving as a crucial resource for millions of people.

Turbid Water

Water that contains suspended solids causing it to appear cloudy or murky, often a sign of pollution or sediment disturbance.