What Is the Ratio of Phenotypes in the Offspring Produced

question 88

Multiple Choice

What is the ratio of phenotypes in the offspring produced by the cross Aa × Aa? Assume complete dominance for the trait.

• A)100% dominance
• B)100% recessive
• C)75% dominant:25% recessive
• D)50% dominant:50% recessive
• E)25% dominant:75% recessive

Understand the different types of body symmetry and their biological significance.

Distinguish between coelom and pseudocoel, and understand their developmental and functional implications.

Recognize the importance of cephalization in the evolution of animal body plans.

Identify the roles of different feeding strategies (e.g., herbivory, predation, detritivory) in animal survival and ecosystem dynamics.

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Definitions:

Secretory Proteins

Proteins that are secreted from cells and serve various functions, such as signaling, defense, and regulation in different biological processes.

Smooth Endoplasmic Reticulum

A cellular organelle involved in lipid synthesis, detoxification processes, and calcium ion storage, distinguished by its lack of ribosomes.

Lipid Synthesis

The process by which cells produce lipids, crucial for cell membrane formation, energy storage, and hormone production.

Nuclear Pores

Complexes in the nuclear envelope that regulate the transport of molecules between the nucleus and the cytoplasm in cells.