Selina solutions for Concise Biology Class 10 Icse chapter 3 - Genetics - Some Basic Fundamentals [Latest edition]

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Which one of the following is the phenotypic monohybrid ratio in F₂ generation?

If a pure tall plant is crossed with a pure dwarf plant, then offspring will be

The 9:3:3:1 dihybrid ratio is due to

A plant with green pods and smooth seeds with genotype Ggss will give rise to the following gametes:

Match the terms in column I with their explanations in column II. 

Name any two genetic in humans.

Which one of the following genotypes is homozygous dominant and which one homozygous recessive in regards to tongue rolling:

Differentiate between: 

genotype and phenotype

Differentiate between: 

character and trait.

Differentiate between:

monohybrid and dihybrid cross (phenotypic ratio) 

Among lion, tiger and domestic cat, al the three have the same number of 38 chromosomes, yet they have different appearances. How do you account for such differences?

List any three features of garden pea with their dominant and recessive traits. 

Explain why generally only the male child suffers from colour blindness and not the female?  

In a certain species of animals, black fur (B) is dominant over brown fur (b) Show the possible ratio of genotypes and phenotypes of the offspring of the pure breeding different coloured parents. 

Explain the following term :
Heterozygous

Explain the following term : Homozygous

Explain the following term : Pedigree chart

State the three mendel’s laws of inheritance. 

Does the sex of the child depend on the father or it is just a matter of chance? Discuss 

In a certain species of animals, black fur (B) is dominant over brown fur (b) Predict the genotype and phenotype of the offspring when both parents are ‘Bb’ or have heterozygous
black fur . 

Two pairs (A & B) of rabbits were crossed as given below: 

 (a) Can you tell which coat colour (black or white) is dominant? .............................
(b) Is the coat colour sex-linked? ………………….

Make a punnett square for finding out the proportion of different genotypes in the progeny of a genetic cross between. 

A pure tall (TT) pea plant with a pure dwarf (tt) pea plant. 

Make a punnett square for finding out the proportion of different genotypes in the progeny of a genetic cross between. 

red flower variety of pea (RR) with white flower variety of pea (rr)

A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness in them.  

Who is colour blind in the parents – the Father or the Mother?  

A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.

How many daughters and how many sons have been born in the family?

A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.

What does the child 1 indicate about this trait?

A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.

On which chromosome is the gene of this trait located?

A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.

Name one other trait in humans which follows a similar pattern of inheritance.