Question # 1

In humans, a sperm has 23 chromosomeds. Egg cell has.

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23 chromosomes

46 chromosomes

No chromosomes

69 Chromosomes

The colour of eyes in an organism is controlled by a.

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Egg

Zygote

Chromosomes

Gene pair

The section of DNA which has information for making a specific protein is called.

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DNA strand

Nucleotide

Chromosomes

Gene

You are different from your brother and sisters This is called

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Adaptation

Variation

Mitosis

Hereditary

An event that occurs during interphase.

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Division of nuclesu

Duplication of chromosomes

Division of cytoplasm

Formation of cell wall

Which fo these is NOT a genetic variation.

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Attached earlobes

Blood group

Eye colour

Mark of cut on skin

During reproduction, living things pass their characteristics to their.

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Parents

Grand parents

Off spring

Brother and sister

The cells which are produced as a result of cell division are called.

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Parent

Primary

Secondary

Daughter

Reduction of chromosomes takes place during.

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Mitosis

Meiotic -I

Meiotic -II

Both mitosis and meiotic -II

Before mitosis, sets of chromosomes are.

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Two

Three

Four

Five

The process of cell division involves phases.

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Two

Three

Four

Five

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