Science Class 10 NCERT Textbook- Lesson-9


Cellular DNA is the information source for making proteins in the cell. A section of DNA that provides information for one protein is called the gene for that protein.

The sex of the children will be determined by what they inherit from their father. A child who inherits
An X chromosome from her father will be a girl, and one who inherits a Y chromosome from him will be a boy.

The designs of the two wings, their structure and components, are thus very different. They look similar because they have a common use for flying, but their origins are not common. This makes them analogous characteristics

The designs of the two different organs of two different organisms are different in structure and components but look similar because they have a common use, but their origins are not common. This makes them analogous characteristics.

Next Topic:-Science Class 10 NCERT Textbook- Lesson-10