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प्रश्न
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
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उत्तर
In sexual reproduction, the offspring inherits genetic material from both parents. Therefore, the newborn shows similarities in various characteristics with its parents. These inherited characteristics are transmitted through genes present on chromosomes.
For example:
- A child may have the same eye colour, hair colour, or blood group as one or both parents.
- The shape of the nose, facial features, height, and other physical traits may also resemble those of the parents.
However, due to the combination and recombination of genes from both parents, the offspring is not exactly identical to either parent and shows some variations.
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संबंधित प्रश्न
Briefly describe the process of spermatogenesis.
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
The process which the sperm undergoes before penetrating the ovum is ____________.
Define gametogenesis.
Give a schematic representation of spermatogenesis and oogenesis in humans.
Expand the acronym.
hCG
Which of the following are known as the nourishing cells present in the seminiferous tubules?
The part labelled as ______ contains the energy source that facilitates sperm motility.
Which of the following correctly describes the secondary oocyte?
Four primary spermatocytes give rise to ______.
______ undergoes 2nd meiotic division during spermatogenesis.
Corona radia is made up of ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Which cell division is involved in the formation of secondary oocytes?
The region of the root tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the:
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
Capacitation refers to changes in the ______.
What is spermatogenesis?
