Genes and Inheritance

The neucleus of every cell contains threads called

• Genes

• Cell wall

• Chromosomes

• Xylem

Each chromosome is made up of hundreds of

• Genes

• DNA

• X chromosome

• Y chromosome

Each chromosome has————— Copies of itself

How many chromosomes are there in a human cell ? Also mention no of chromosome in a fruit fly and a mango.

Complete it

23 pairs :: —— individual

• 56

• 46

• 23

• 67

What are chromosomes?

• Long strands of DNA that contain lots of genes.

• Different versions of a gene.

• The basic unit of heredity; controls a specific trait.

• A characteristic passed from parent to offspring

• The differences that occur from a mixture of genes

What is a gene?

• Long strands of DNA that contain lots of genes.

• Different versions of a gene.

• The basic unit of heredity; controls a specific trait.

• A characteristic passed from parent to offspring

• The differences that occur from a mixture of genes

Full form of DNA is —————

A DNA molecule has a shape like

• A circle

• A square

• A line

• A twisted ladder

Chromosomes are made up of chemical substances called

• Genes

• DNA

• X chromosome

• Neucleus