✓ Board-verified
Science · 2024 · 2 marks
CBSE 2024 · Region 2 · Set 3 · Q23
Mendel crossed a round and yellow seeded pea plant with a wrinkled and green seeded pea plant. What did the plants of $\displaystyle \mathrm{F}_{1}$ generation look like in terms of shape and colour of seed ? On self-pollinating $\displaystyle \mathrm{F}_{1}$ generation plants, plants with four types of combinations of characters were seen in $\displaystyle \mathrm{F}_{2}$ generation. Write the combinations along with their ratios.
Marking-scheme solution
\(\displaystyle \mathrm{F}_{1}\) generation : Round and Yellow seeds
\(\displaystyle \mathrm{F}_{2}\) generation : Four combinations
Round and Yellow - $\displaystyle 9$
Round and Green - $\displaystyle 3$
Wrinkled and Yellow - $\displaystyle 3$
Wrinkled and Green - $\displaystyle 1$,More from Heredity
- In human beings, there are 23 pairs of chromosomes. Out of these 23 pairs of chromosomes (i.e. 46…2025 · asked 3×
- Two pea plants, one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds were crossed…2026 · asked 3×
- Assertion: Human female has a perfect pair of sex chromosome. Reason (R): Sex chromosome contributed by the…2024 · asked 3×
- Assertion: Human populations show a great deal of variations in traits. Reason (R): All variations in a…2023 · asked 3×
- Assertion: A mango seed will germinate to form a mango tree. Reason (R): Heredity determines the process by…2025 · asked 3×
- All human chromosomes are not paired. Most human chromosomes have a maternal and a paternal copy, and we have…2023 · asked 3×
- Consider the following two statements: (i) The trait that expresses itself in F 1 generation. (ii) The trait…2023 · asked 3×
- Using height (tallness / dwarfness) of a plant as an example, show that genes control the characteristics or…2022 · asked 3×
CBSE Class 10 Science past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.