Question : Genes are not found in pairs
Option 1: in body cells
Option 2: in the ovary after fertilisation
Option 3: in gametes
Option 4: in zygotes
Correct Answer: in gametes
Solution : The correct option is in gametes.
Genes are not found in pairs in gametes. The specialised reproductive cells known as gametes, which include sperm, and egg cells, are haploid, meaning they have half as many chromosomes as the organism's diploid somatic (body) cells. The procedure that halves chromosomal numbers is called meiosis. Following fertilisation, the gametes fuse, and the developing zygote becomes diploid, containing one allele from each parent. The genetic diversity of a child is increased by this mix of alleles from both parents.
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Question : During fertilisation in living beings, the fusion of male and female gametes takes place to form a cell called:
Option 1: Zygote
Option 2: Ovum
Option 3: Embryo
Option 4: Sperm
Question : Which of the following statements is correct?
Option 1: The transport of male gametes in Gymnosperms occurs through water.
Option 2: The transport of male gametes in bryophytes and pteridophytes occurs through water.
Option 3: The transport of male gametes in bryophytes and pteridophytes occurs through air.
Option 4: The transport of male gametes in angiosperms occurs through water.
Question : Grey hair is caused due to
Option 1: ageing of epidermal cells
Option 2: death of dermal cells
Option 3: loss of sebum in epidermal cells
Option 4: loss of melanin in epidermal cells
Question : Birds usually have a single:
Option 1: Kidney
Option 2: Lung
Option 3: Testis
Option 4: Ovary
Question : The bricks in a building are similar to __________in the living organisms.
Option 1: cells
Option 2: tissues
Option 3: organs
Option 4: glands
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