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Important Questions on Heredity and Variation

MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Write any two differences between genotype and phenotype.
EASY
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Which ONE of the following statements is INCORRECT?
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics

Give appropriate biological or technical terms for the following:

The condition in which a pair of chromosomes carry similar alleles of a particular character.

EASY
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
A true breeding plant is:
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
The minimum number of plants to be screened to obtain a plant of the genotype AabbCcDd from a cross between plants of genotypes AaBbCcDd and AABbCCDd is:
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Explain the following term:
Phenotype.
HARD
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
The following question has four choices. Choose the best option.

Study the given monohybrid cross

A test cross for this F1 will be:

MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Explain the terms phenotype and genotype.
EASY
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
How many types of gametes can be produced by individual with the genotype AAbb?
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Assertion (A): In human beings, the sex of the offspring depends on the type of sperm that fertilizes the ovum
Reason (R): Human males are heterogametic
The correct option among the following is
HARD
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
How will you find that F1 Hybrid is homozygous or heterozygous? Explain it with suitable example.
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
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?
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Identify which one of the following is a test cross.
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
What is reciprocal cross?
EASY
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
What is the genetic nature of wrinkled phenotype of pea seeds?
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Define test cross and draw diagram.
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
What is test cross? Show phenotypic ratio 1:1 in a monohybrid test cross through punnett square.
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
Suppose the three non-linked autosomal genes A, B and C control coat colour in an animal and the dominants alleles A, B and C are responsible for dark colour and the recessive alleles a, b and c are responsible for light colour. If a cross between a male of AABBCC genotype and a female of aabbcc genotype produces 640 offsprings in the F2-generation, how many of them are likely to be of the parental genotype?
HARD
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics
A plant with genotype AABBCC is crossed with another plant with aabbcc genotype. How many different genotypes of pollens is possible in an F1 plant if these three loci follow an independent assortment?
MEDIUM
Biology>Genetics and Evolution>Heredity and Variation>Terminologies Used in Genetics

Match the following lists:

  List - I   List - II
(A) Back cross   It is the genetic make up of an individual.
(B) Test cross (II) An individual is having two different alleles for a single character. Consequently, it will produce two different types of gametes with reference to a gene.
(C) Heterozygote (III) An individual is having two similar or identical alleles for a single character. Hence, it will produce only one kind of gametes with reference to a gene.
(D) Homozygote (IV) If the F1 progeny are mated back to one of their parents.
    (V) The cross between F1 progeny (or heterozygotes) and their recessive homozygous parent.

The correct match is: