SEBA Class 10 Science Important Chapter 9 Heredity and Evolution

SEBA Class 10 Science Important Chapter 9 Heredity and Evolution Solutions English Medium As Per SEBA New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 10 Science Additional Solutions in English and select need one. SEBA Class 10 General Science Additional Notes English Medium Download PDF. SEBA Important Solutions for Class 10 Science.

SEBA Class 10 Science Important Chapter 9 Heredity and Evolution

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 10 General Science Additional Question Answer are part of All Subject Solutions. Here we have given NCERT Class 10 Science Important Question Answer English Medium for All Chapters, You can practice these here.

Heredity and Evolution

Chapter: 9

IMPORTANT QUESTION ANSWER

Q.1. What is called heredity? 

Ans: Heredity is the passing of traits from parents to their offspring, either through genetics or through a combination of genetics and environmental factors. 

Q.2. What do you mean by variation. Give example. 

Ans: Variation can be defined as any difference between the individuals in a species or groups of organisms of any species is called variation. 

Examples of variation:

1. Person’s skin colour
2. Hair colour
3. Dimples
4. Freckles
5. Blood type
6. Modified leaves of carnivorous plants
7. Cheetah with stripes
8. Snakes that fly
9. Animal that mimic leaves 

Q.3. What is gene? 

Ans: Genes are small sections of DNA within the genome that code for proteins. They contain the instructions for our individual characteristics – like eye and hair colour.

Q.4. Define: 

(a) Dominant gene.

Ans: A dominant gene, or a dominant version of a gene, is a particular variant of a gene, which for a variety of reasons, expresses itself more strongly all by itself than any other version of the gene which the person is carrying, and, in this case, the recessive.

(b) recessive gene. 

Ans: A recessive gene is a gene that can be masked by a dominant gene. In order to have a trait that is expressed by a recessive gene, such as blue eyes, you must get the gene for blue eyes from both of your parents.

Q.5. What do you mean by phenotype? Give example.

Ans: Phenotype refers to an individual’s observable traits, such as height, eye color and blood type. A person’s phenotype is determined by both their genomic makeup (genotype) and environmental factors.

For example: being tall’ or ‘short ‘ are phenotypes of a plant because these traits can be seen by us or they are visible to us. 

Q.6. What is hybrid?

Ans: A hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, species or genera through sexual reproduction.

Q.7. Define Mendel’s first law of inheritance. 

Ans: According to Mendel’s first law of inheritance: is the Law of Segregation Itstates that the characteristics or traits of an organism are determined by internal factors. Only one of a pair of such factors can be present in a singh gamete. 

Q.8. Define Mendel’s second law of inheritance. 

Ans: According to Mendel’s second law of inheritance:- In the inheritance of more than one pair of traits in a cross simultaneously , the factors responsible for each pair of traits are distributed independently to the gametes . 

Q.9. World Explain an acquired trait with an example. 

Ans: The traits of an organism that are not inherited, but develop in response to the environment is called an acquired trait. 
For example: If a beetle does not get sufficient food for a considerable time, its weight will be reduced due to starvation. The trait of an organism that is caused by a change in its genes is called an inherited trait.