Question

A cross between a pure tall and pure dwarf pea plant resulted in production of all tall plants, because

• A. Tallness is the dominant trait.
• B. Tallness is the recessive trait.
• C. Dwarfness is the dominant trait.
• D. None of the above.

Answer 1

Answer: (A)

Tallness is the dominant trait.

When you breed a pure tall and pure dwarf pea plant, only one character is expressed in the offspring and the other character is completely suppressed. The character that is expressed is called dominant and the character that is not expressed is called recessive. When pure tall and pure dwarf pea plants are crossed, all the resultant plants will be tall because tallness is a dominant character for pea plant.