Question

the table summarizes the traits that mendel examined during his experiments.

traits studied by mendel

plant height	tall	short
flower color	purple	white
flower position	end of stem	middle of stem
pod color	green	yellow
pod shape	inflated	constricted
seed color	yellow	green
seed shape	smooth	wrinkled

what do these characteristics all have in common?

• they are all recessive.
• they can all be easily observed.
• they can all be applied to other plants.
• they are all dominant.

Explanation:

Analyze the traits studied by Mendel

The table lists seven physical characteristics of pea plants (plant height, flower color, flower position, pod color, pod shape, seed color, seed shape) along with their contrasting variations (e.g., tall vs. short, purple vs. white).

Evaluate the commonality among these characteristics

• "They are all recessive" and "They are all dominant" are incorrect because each characteristic has one dominant and one recessive allele variation.
• "They can all be applied to other plants" is incorrect because these specific traits (like pod shape or specific flower positions) are characteristic of pea plants and do not universally apply to all other plant species.
• "They can all be easily observed" is correct because Mendel specifically chose these seven traits because they are clear, discrete, and easily observable physical phenotypes.

Answer:

• They are all recessive.
• They can all be easily observed. (Correct answer)
• They can all be applied to other plants.
• They are all dominant.