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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
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
Describe the process of spermatogenesis with the help of diagram.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
The male sex hormone testosterone is secreted from ____________.
Identify the labels (i-iv) in the given diagram of the ovum.
Identify the proper order of spermatogenesis and choose the correct option.
Four primary spermatocytes give rise to ______.
In human beings, the largest cell formed during Oogenesis is ______
How many autosomes does a human primary spermatocyte have?
How many sperms are formed from a secondary spermatocyte?
How many sperms are formed from 4 primary spermatocytes?
In oogenesis haploid egg is fertilised by sperm at which stage?
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?
Fetal sex can be determined by examining cells from amniotic fluid looking for:
In the process of fertilization, this is true:
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
During spermatogenesis meiosis occurs in ______.
Draw a labelled diagram of a section through the ovary.
