Inheritance of One gene
Inheritance of One gene: Overview
This topic explains the experiment of Mendel’s inheritance of one gene along with a schematic representation. Further, it gives a detailed explanation of the law of inheritance.
Important Questions on Inheritance of One gene
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:
If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the off springs would be
Choose the correct option regarding the inheritance of flower colour in Antirrhinum (dog flower).
Assertion: ABO blood group system is a good example of pleiotropic genes.
Reason: In ABO blood group system, when IA and IB alleles are present together, both express themselves.
On selfing a plant of F1 generation with genotype 'AABbCC' the phenotypic ratio in F2 generation will be:
With the help of Mendel's cross between tall and dwarf garden peas mention the phenotypic and genotypic ratio of the F2 generation.
The generation produced by crossing two parental organisms is called the second filial generation.
What does the inheritance of flower colour in Antirrhinum (dog flower) define?
If the gene pool of the locus X in the human genome is 4, then what would be the highest possible number of genotypes in a large population?
The dominant phenotype is dependent on which one of the following?
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.(Test cross/ Back cross/ Reciprocal cross)
In which type of dominance, F1 generation resembles both parents?
Human blood groups are determined by multiple genes.
In a monohybrid cross, the test cross gives the expected ratio of .
_____ (linkage/mutation/fertilisation) is a phenomenon which results in alteration of DNA sequences and consequently results in changes in the genotype and the phenotype of an organism.
The factors (now known as gene) on chromosomes regulating the characters are called the genotype and the physical expression of the chraracters is called _____.
A cross between an individual with unknown genotype for a trait with recessive plant for that trait is
Explain F1 generation.
