If two genes are closely linked on the same chromosome:
1.
they will assort independently
2.
the proportion of recombinants formed will be higher than the parental types
3.
the proportion of recombinants formed will be much lower than the parental types
4.
the proportion of recombinants formed will be equal to that of the parental types
Subtopic: Â Linkage Types |Â Recombination & Gene Mapping |
 85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The trait, shown by solid symbols in the given pedigree, is MOST LIKELY inherited as:
1. Autosomal recessive trait
2. Sex linked recessive trait
3. Autosomal dominant trait
4. Sex linked dominant trait
1. Autosomal recessive trait
2. Sex linked recessive trait
3. Autosomal dominant trait
4. Sex linked dominant trait
Subtopic: Â Pedigree Analysis: Basics |Â Pedigree Analysis: Problem Solving |
 53%
Please attempt this question first.
Hints
Antirrhinum majus with pink flowers is crossed with Antirrhinum majus with white flowers. What is the expected phenotypic ratio in the progeny?
1. 1 [red] : 2 [pink] : 1 white
2. 3 [red] : 1 [white]
3. 1 [pink] : 1 [white]
4. 3 [pink] : 1 [white]
1. 1 [red] : 2 [pink] : 1 white
2. 3 [red] : 1 [white]
3. 1 [pink] : 1 [white]
4. 3 [pink] : 1 [white]
Subtopic: Â Monohybrid Cross: 1 |Â Monohybrid Cross: Further Understanding |
 58%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Four genes A, B, C and D are linked to the same chromosome in an organism. The distance between the gene pairs is as given below:
What is the order of these four genes?
1. ABCD
2. ACBD
3. ABDC
4. BADC
| [a] | between A and B = 28 map units, |
| [b] | between B and C = 15 map units |
| [c] | between C and D = 25 map units |
| [d] | between B and D = 10 map units |
| [e] | between A and D = 38 map units |
| [f] | between A and C = 13 map units |
1. ABCD
2. ACBD
3. ABDC
4. BADC
Subtopic: Â Linkage Types |Â Recombination & Gene Mapping |
 89%
Please attempt this question first.
Hints
The two alleles of a gene pair are located on:
1. homologous sites on homologous chromosomes
2. homologous sites on heterologous chromosomes
3. heterologous sites on homologous chromosomes
4. heterologous sites on heterologous chromosomes
1. homologous sites on homologous chromosomes
2. homologous sites on heterologous chromosomes
3. heterologous sites on homologous chromosomes
4. heterologous sites on heterologous chromosomes
Subtopic: Â Monohybrid Cross: 1 |
 79%
Please attempt this question first.
Hints
Assuming independent assortment, how many different phenotypes can appear in the offspring if individual plants with genotype AaBb are intercrossed?
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 9 |
Subtopic: Â Dihybrid Cross Analysis |
 80%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
In Pisum sativum, Mendel studied:
1. 7 characters and 7 contrasting traits
2. 7 characters and 14 contrasting traits
3. 14 characters and 7 contrasting traits
4. 14 characters and 14 contrasting traits
1. 7 characters and 7 contrasting traits
2. 7 characters and 14 contrasting traits
3. 14 characters and 7 contrasting traits
4. 14 characters and 14 contrasting traits
Subtopic: Â Introduction to Genetics: 1 |Â Introduction to Genetics: 2 |
 76%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
In Mendelian inheritance, a recessive allele for a character is the one that:
| 1. | is least frequent in the population |
| 2. | was the original allele, from which other alleles have been formed by mutation |
| 3. | expresses itself only in homozygous condition |
| 4. | does not segregate during gamete formation |
Subtopic: Â SUMMARY |
 88%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
A dihybrid cross yields a phenotypic ratio of 9 : 3 : 3 : 1 in F2 progeny. Most likely, the two genes:
1. are assorting independently
2. are tightly linked on an autosome
3. are linked to a sex chromosome
4. control the same trait
1. are assorting independently
2. are tightly linked on an autosome
3. are linked to a sex chromosome
4. control the same trait
Subtopic: Â Dihybrid Cross: General Consideration |
 90%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If a woman who is a known carrier for the gene of colour blindness marries a normal male, what percent of her male progeny are expected to be affected by the condition?
1. 0
2. 25
3. 50
4. 100
Subtopic: Â Mendelian Disorders |
 76%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2025 GoodEd Technologies Pvt. Ltd.