EASY
Earn 100
The genotype of a plant showing the dominant phenotype can be determined by:
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Important Questions on Principles of Inheritance and Variation
HARD
A plant with genotype AABBCC is crossed with another plant with aabbcc genotype. How many different genotypes of pollens is possible in an plant if these three loci follow an independent assortment?
EASY
Which of the following crosses is a test cross?
MEDIUM
Match the terms in Column-I with their description in Column-II and choose the correct option:
| Column – I | Column – II |
| (a) Dominance | (i) Many genes govern a single character |
| (b) Codominance | (ii) In a heterozygous organism, only one allele expresses itself |
| (c) Pleiotropy | (iii) In a heterozygous organism, both alleles express themselves fully |
| (d) Polygenic inheritance | (iv) A single gene influences many characters |
EASY
A round seeded tall pea plant is crossed with round seeded dwarf plant and obtained progeny are with following phenotypes
- Tall, Round
- Dwarf, Round
- Tall, Wrinkled
- Dwarf, Wrinkled
The possible genotype of parents:
EASY
How many types of gametes can be produced by individual with the genotype AAbb?
EASY
In 'Mendel' dihybrid cross, which of the following result was obtained in generation?
EASY
An allele that mask the effect of another allele is called
EASY
Which ONE of the following statements is INCORRECT?
MEDIUM
What is the ratio for test cross in dihybrid experiment of Mendel?
EASY
A true breeding plant is__________
MEDIUM
Some of progeny are formed during dihybrid cross between round and yellow and wrinkled and green pea plants. Their genotypes are:
MEDIUM
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 progeny are mated back to one of their parents. |
| (V) | The cross between progeny (or heterozygotes) and their recessive homozygous parent. |
The correct match is:
EASY
The maximum number of different gametes of the pollens produced by a tall pea plant with round, yellow, seeds of the genotype , if the three loci are unlinked, would be
MEDIUM
The minimum number of plants to be screened to obtain a plant of the genotype from a cross between plants of genotypes and is:
MEDIUM
In a breed of dog, long-haired phenotype is recessive to short-hair. In a litter, one pup is short- haired and its sibling is long-haired. Consider the following possible phenotypes of the parents.
i. Both parents are short-haired.
ii. Both parents are long-haired.
iii. One parent is short-haired, and one is long- haired.
Choose the CORRECT combination of the possible parental phenotypes.
EASY
The two alleles that determine the blood group AB of an individual are located on
EASY
A testcross is done to find out
MEDIUM
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?
EASY
A true breeding plant is:
