Mendelian Genetics
Mendelian Genetics: Overview
This Topic covers sub-topics such as Law of Segregation, Monohybrid Cross, Law of Independent Assortment, Law of Dominance, Mendel's Laws of Inheritance, Punnett Square, Mendel's Experiment and, Pre-Mendelian Concepts of Heredity
Important Questions on Mendelian Genetics
Which of the following law of inheritance has not been given by Mendel:
Look at the given diagram and answer the following question :
Identify the phenotypic ratio of A, B, C, D.
Look at the diagram given below and answer the following question :
Identify the genotypes of A, B, C, D.
You are given tall pea plants with yellow seeds whose genotypes are unknown. It was crossed with a dwarf pea plant with green seeds. The progeny obtained has equal ratio of tall and dwarf plants and equal proportion of green and yellow seeds. The genotype of the first plant is:
When a violet flower producing plant was crossed with white flower producing plant, the progeny obtained had all violet flower.
The genotype of first parent was homozygous or heterozygous:
A homozygous tall pea plant with yellow seeds is crossed with a dwarf pea plant with green seeds. The phenotypic ratio of its F2 plants would be:
If a homozygous tall plant is crossed with homozygous dwarf plant, the offspring will be
If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the off springs would be
"Some phenotypes may have multiple genotypes and some other phenotypes may have a single genotype" -- justify the statement from the results derived from the dihybrid experiment in case of pea plant.
Heterozygous plants of garden pea were self-fertilised. In the progeny, 750 round seeded plants were obtained. How many plants in the progeny will have intermediate size starch grain?
Find out the number of plants produced with genotype AabbCc out of 256 seeds collected from F2 progenies of a trihybrid cross.
How many Pea plants will be dwarf in a mendelian dihybrid cross for height and flower color in F2 generation ?
Father has black eyes and mother has blue eyes. One of spring has blue eyes and two others have black eyes. Comment upon the genotype of parents and offspring.
The following phenotypic results are obtained when a pea plant with round and yellow seeds is crossed with another pea plant with wrinkled and yellow seeds.
| Round and yellow | Round and green | Wrinkled and green | Wrinkled and yellow |
Identify the genotypes of the plants involved in the cross.
Which of the following character was not a part of Mendel's experiments?
The following characters are observed in different pea plants :
A) Seeds round, flowers white, flowers in axial position.
B) Pods inflated, seeds wrinkled, pods green.
C) Seeds green, pods constricted, flowers violet.
D) Flowers white, pods yellow, flower position terminal.
How many characters are dominant and recessive in each plant mentioned above according to the studies of G.J. Mendel respectively?
The correct answer is :
What will be the F2 phenotypic ratio of a dihybrid cross in which one character is leaf colour (lethal gene) and second character is flower colour (incomplete dominance) in Antirrhinum majus?
A Rh+ve man (heterozygous) is married a Rh-ve lady. They had four children, only first and the last are Rh+ve. Then the child with erythroblastosis foetalis / HDNB among the four children probably is
Mendel and Morgan worked on these, respectively:
Which is correct about traits chosen by Mendel?
