Question

Pedigree charts are helpful in studying human genetics. What do the following conventionally represent in such charts :
(i) square (ii) circle (iii) solid circle or square (iv) open circle or square ?

Solution

(i) Square—Male

(ii) Circle—female

(iii) Solid circle or square—To show affected or diseased individuals

(iv) Open circle or square—To show the normal or un-affected individuals.

Some More Questions From Principles of Inheritance and Variation Chapter

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

What are the real determinants of what an organism will become ?

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Principles Of Inheritance And Variation

Pedigree charts are helpful in studying human genetics. What do the following conventionally represent in such charts :
(i) square (ii) circle (iii) solid circle or square (iv) open circle or square ?

Some More Questions From Principles of Inheritance and Variation Chapter

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

What are the real determinants of what an organism will become ?

What is the unique feature of F1 generation ?

What will be the genetic make up of an organism which suffers from sickle cell anaemia ?

What do the symbols square and circle in a pedigree chart indicate ?

Define heterogamy. Give an example.

How many chromosomes are found in human cells ?

Why is male Drosophila regarded as heterogametic ?

What term is used for the two chromatids resulting from the interchange of segments during crossing over ?

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NCERT Sample Papers

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For Daily Free Study Material Join wiredfaculty

Principles Of Inheritance And Variation

Pedigree charts are helpful in studying human genetics. What do the following conventionally represent in such charts : (i) square (ii) circle (iii) solid circle or square (iv) open circle or square ?

Some More Questions From Principles of Inheritance and Variation Chapter

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

What are the real determinants of what an organism will become ?

What is the unique feature of F1 generation ?

What will be the genetic make up of an organism which suffers from sickle cell anaemia ?

What do the symbols square and circle in a pedigree chart indicate ?

Define heterogamy. Give an example.

How many chromosomes are found in human cells ?

Why is male Drosophila regarded as heterogametic ?

What term is used for the two chromatids resulting from the interchange of segments during crossing over ?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Pedigree charts are helpful in studying human genetics. What do the following conventionally represent in such charts :
(i) square (ii) circle (iii) solid circle or square (iv) open circle or square ?