Heredity and Variation
Heredity and Variation: Overview
This Topic covers sub-topics such as Genetics, Heredity, Gene, Variation, Alleles, Mendel's Laws of Inheritance, Dominant Trait and, Recessive Trait
Important Questions on Heredity and Variation
Which of the following genotype pair given below do not show same expression w.r.t. seed shape and seed colour?
In maize, the trait for the purple kernel (P) is dominant over the yellow kernel (p). A plant with purple kernels is crossed with another plant with yellow kernels and produces 2 offspring with purple kernels and 2 offspring with yellow kernels. What is the genotype of the parental maize plants?
The genotype for the height of an organism is "TT". How many alleles does it have?
Assertion: Excessive use of pesticides and herbicides has no effect on resistant varieties of microbes.
Reason: Pathogenic bacteria are appearing in a very short period of time because of chemical resistance.
The functioning allele which represents the original phenotype is the __A__ allele and the modified allele is generally __B__ allele.
What is the scientific name of the pea plant?
What are the basic units of heredity?
Human blood groups are determined by multiple genes.
Any gene that produces an effect in the heterozygous condition is called dominant.
When the inheritance of a character is determined by many genes with the same but cumulative phenomenon, the effect is called quantitative inheritance.
Extra nuclear genes are usually present in mitochondria and _____.
The _____ deals with the control of several inherited human diseases especially inborn errors of metabolism.
Mendel performed experiments on _____.
Explain Factor.
Enlist seven traits in pea selected by Mendel.
Why did Mendel select garden pea for his experiments? Explain the characteristics of pea.
Which genetical characters of inheritance were studied by Mendel in his experiments? Explain.
Why Mendel is selected pea for his experiments? Explain.
Note: There is a grammatical error in the question hence rectified as below:
Why Mendel selected pea for his experiments? Explain.
Mention the reasons of Mendel's success.
Mention difference between dominant and recessive traits.
