GGHH and Ccdd Individuals Are Crossed to Each Other and the F₁

question 17

Multiple Choice

GGHH and ccdd individuals are crossed to each other and the F₁ backcrossed to the gghh parent. The 4000 progeny included 1806 GgHh, 1794 gghh, 196 Gghh, and 204 ggHh individuals. GGhh and ggHH individuals are next crossed to each other and the F₁ test-crossed to a gghh individual. A total of 1600 offspring appeared in the progeny. How many do you expect to be of GgHh genotype?

• A) 40
• B) 160
• C) 320
• D) 80
• E) 1600

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Definitions:

Liver Cells

Also known as hepatocytes, these are the main cell type found in the liver, playing a vital role in metabolism, detoxification, and protein synthesis.

Golgi Apparatus

An organelle involved in the modification, sorting, and packaging of proteins and lipids for secretion or use within the cell.

Vesicles

Vesicles are small, fluid-filled sacs or bladders within or on the surface of cells, involved in transport, storage, or digestion activities.

ER

Endoplasmic reticulum, a network of membranous tubules within the cytoplasm of eukaryotic cells, involved in protein and lipid synthesis.