SET 1
ONE EIGHTH CONTEST 2026
Prempeh College - 66 points
West Africa SHS - 30 points
Kumasi Girls’ SHS - 19 points
ONE EIGHTH CONTEST 2026
Keta SHTS - 56 points
Kadjebi-Asato SHS - 28 points
Anum Presby SHS - 19 points
ONE EIGHTH CONTEST 2026
Ghana National College - 38 points
St. Monica’s SHS - 22 points
Presby SHS, Suhum - 16 points
ROUND 1
PREAMBLE
Give the dominant and the recessive phenotypes of the given traits studied by Gregor Mendel to understand the inheritance pattern in pea plants.
1. Flower color
ANSWER: Purple for dominant and white for recessive
2. Flowering position
ANSWER: Dominant position at axillary position and recessive at terminal position.
3. Seed Color
ANSWER: Dominant seed color yellow and the recessive green
PRACTICE QUESTIONS
1. How many traits did Mendel study in pea plants?
ANSWER: Seven.
2. Which seed shape is dominant in peas?
ANSWER: Round.
3. Which pod colour is dominant in peas?
ANSWER: Green.
4. Which pod shape is dominant in peas?
ANSWER: Inflated.
5. Which stem height is dominant in peas?
ANSWER: Tall.
6. Why did Mendel choose the pea plant?
ANSWER: It grows quickly, has clear contrasting traits and is easy to cross.
7. What is a true-breeding plant?
ANSWER: A plant that always produces offspring like itself when self-pollinated.
8. What do P, F1 and F2 stand for?
ANSWER: Parental generation, first filial generation and second filial generation.
9. What phenotypic ratio did Mendel find in the F2?
ANSWER: Three dominant to one recessive.
10. Who published the work on pea plants?
ANSWER: Gregor Mendel, in 1866.
11. How did Mendel cross-pollinate flowers?
ANSWER: He removed the anthers and dusted pollen from another plant on the stigma.
12. What is a monohybrid cross?
ANSWER: A cross that follows one pair of contrasting traits.