Alleles are

1. different phenotype

2. true breeding homozygotes

3. different molecular forms of a gene

4. heterozygotes

Subtopic:  Monohybrid Cross: 1 |
 79%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Fruit color in squash is an example of 

(1) recessive epistatis

(2) dominant epistatis

(3) complementary genes

(4) inhibitory genes

Subtopic:  Epistasis |
 57%
NEET - 2014
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A human female with turner's syndrome

(1) has 45 chromosomes with XO

(2) has one additional X-chromosome

(3) exhibits male characters

(4) is able to produce children with normal husband

Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 84%
From NCERT
NEET - 2014
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following statements is not true of two genes that show 50% recombination frequency?

(1) the genes may be on different chromosomes 

(2) the genes are tightly linked

(3) the genes show independent assortment

(4) If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis

 

Subtopic:  Recombination Gene Mapping |
 54%
From NCERT
NEET - 2013
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If two persons 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group : 'AB' blood group : 'B' blood group in 1 : 2 : 1 ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of

(1) codominance

(2) incomplete dominance

(3) partial dominance

(4) complete dominance 

Subtopic:  Dominance Deviation from Mendel: 2 |
 88%
From NCERT
NEET - 2013
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents?

(1) Incomplete dominance

(2) Law of dominance

(3) Inheritance of one gene

(4) Codominance

Subtopic:  Dominance Deviation from Mendel: 2 |
 67%
From NCERT
NEET - 2013
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The incorrect statement with regard to haemophilia is

(1) it is a sex-linked disease

(2) it is a recessive disease

(3) it is a dominant disease

(4) a single protein involved in the clotting of blood effected

Subtopic:  Mendelian Disorders: Hemophilia |
 82%
From NCERT
NEET - 2013
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A normal-visioned man whose father was colourblind, marries a woman whose father was also a colourblind. They have their first child as a daughter. What are the chances that this child would be colourblind?

(1) 100%

(2) 0%

(3) 25%

(4) 50%

Subtopic:  Sex Linked Recessive Inheritance |
 62%
NEET - 2012
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1:2:1. It represents a case of 

(1) codominance

(2) dihybrid cross

(3) monohybrid cross with complete dominance

(4) monohybird cross the incomplete dominance

Subtopic:  Dominance Deviation from Mendel: 1 |
 68%
From NCERT
NEET - 2012
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which one of the following conditions correctly describes the manner of determining the sex in the given example?

(1) XO type of sex chromosomes determine male sex in grasshopper

(2) XO condition in humans as found in Turner syndromee, determines female sex

(3) Homozygous sex chromosomes (XX) produce male in  Drosophila

(4) Homozygous sex chromosomes (ZZ) determine female sex in birds

Subtopic:  Sex Determination: Further Considerations |
 70%
From NCERT
NEET - 2011
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh