Georgie and Lennie Are Identical Twins

question 83

Multiple Choice

Georgie and Lennie are identical twins. Which of the following is true of their genetic makeup?

• A) They have identical genotypes and identical phenotypes.
• B) They have identical genotypes but not identical phenotypes.
• C) They have identical phenotypes but not identical genotypes.
• D) They have neither identical phenotypes nor identical genotypes.

---

Definitions:

Carbon Dioxide Fixation

The process of converting carbon dioxide into organic compounds, such as glucose, during photosynthesis.

Rubisco

An enzyme involved in the first major step of carbon fixation, a process by which atmospheric carbon dioxide is converted by plants to energy-rich molecules.

RuBP

Ribulose bisphosphate, a substance that plays a critical role in the process of carbon fixation in photosynthesis.

PGAL

PGAL, or Phosphoglyceraldehyde, is a three-carbon molecule that plays a crucial role in both photosynthesis and glycolysis, acting as an intermediate in the conversion of glucose and other sugars.