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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
Sexual reproduction involves the fusion of two types of gametes i.e., the male and the female gametes. The zygote formed contains a fusion of both the sperm nucleus and the egg nucleus. Due to this, the new individual has characteristics which are similar to both the parents while some characteristics which are different from both the parents. Thus, the new individual formed from sexual reproduction inherits the characteristics of both the parents. For example, if the father has black hair while the mother has brown hair, the chances are that their offspring may have either black or brown hair.
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संबंधित प्रश्न
Ovulation is induced by a hormone called ______.
What is oogenesis?
Name the functions - Acrosome of sperm.
Fill in the blank.
Implantation of embryo occurs in ------
Answer the following questions in short.
Which precautions will you follow to maintain the reproductive health?
In meiosis, the number of chromosomes becomes ___________.
What is gamete formation?
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?
Describe the structure of the human ovum with a neat labelled diagram.
Complete the analogy.
1 primary spermatocyte : 4 spermatozoa :: 1 primary oocyte : ____________.
Identify the labels (i-iv) in the given diagram of the ovum.
Identify the correct stages (P - S) in the given diagram of spermatogenesis.
How many autosomes does a human primary spermatocyte have?
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
Aquatic animals in which fertilisation occurs in water are said to be
Fetal sex can be determined by examining cells from amniotic fluid looking for:
3-celled male gamete develops in:
Which of the following cells during gametogenesis is normally diploid?
Draw a neat and labelled diagram of spermatogenesis.
Meiotic division of the secondary oocyte completed ______.
