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Question
Make a punnett square for finding out the proportion of different genotypes in the progeny of a genetic cross between.
A pure tall (TT) pea plant with a pure dwarf (tt) pea plant.
Solution
F2 generation
| Gametes | T | t |
| T | TT | Tt |
| t | Tt | tt |
Genotype - 1(Homozygous tall) :2 (Heterozygous tall):1 (Homozygous dwarf)
Phenotype - 3 (Tall) :1(Dwarf)
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RELATED QUESTIONS
Considering the relationship in the first pair, complete the second pair:
rr : Homozygous : : Rr : ....................
Suppose you are given two pairs of contrasting characters: Seed colour → yellow and green , seed coat → round and wrinkled.
Fill in the following table to show that F2 generation according to the principle of independant assortment as given by Mendel.
| Selfing among hybrids of F1 | RY | Ry | rY | ry |
| RY | ||||
| Ry | ||||
| rY | ||||
| Ry | ||||
| F2 generation |
Predict the genotype and phenotype of the following cross in pea.
TtRr x TtRr
(Capital letters show dominance)
Choose the correct answer:
If a homozygous tall plant is crossed with a heterozygous tall plant, the proportion of tall progeny would be ____________
Which one of the following traits of garden pea studied by Mendel was a recessive feature?
The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. Character studied in the pedigree analysis is equivalent to ______.
What does the progeny of a tall plant with round seeds and a short plant with wrinkled seeds look like?
In Mendel's experiments, colour of seed coat, nature of flower, position of flower, colour of pod, height of stem, are called
A person has to perform crosses for the purpose of studying inheritance of a few traits/characters. What should be the criteria for selecting the organisms?
In parents, mendelian factors occur in pairs, but they segregate during ______.
