For Some Rare Autosomal Dominant Diseases, It Is Possible That

question 1

Essay

For some rare autosomal dominant diseases, it is possible that the dominant homozygote has never been seen. One reason is that the fetus with this genotype may die early in development and be spontaneously aborted. In fact, roughly 25% of all women will have a pregnancy end in spontaneous abortion at some point during their lifetimes. Consider a situation in which
Q/Q dies as an early fetus; Q/q lives to reproduce but is unaffected; q/q lives and is unaffected. What genotypes are possible among live-born children of the mating Q/q × Q/q? (Hint: Construct a 2-by-2 table to reflect the genotypes of the parents.)

---

Definitions:

Market Price

The current price at which an asset or service can be bought or sold, determined by the supply and demand dynamics in the market.

Downward-Sloping Demand Curves

A graphical representation indicating that as the price of a good or service decreases, the quantity demanded increases, and vice versa.

Perfect Competition

A market structure characterized by a large number of small firms, identical products, and free entry and exit from the market.

Identical Goods

Products that are indistinguishable from each other in the eyes of the consumer, often associated with perfect competition markets.