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प्रश्न
Give scientific reason.
The new individual produced by sexual reproduction always has the recombined genes of both the parents.
उत्तर
- Sexual reproduction involves two parents i.e. male parent and female parent.
- The male gamete coming from a male parent fuses with a female gamete of a female parent to form a zygote which develops into an embryo and then into a new individual.
Thus, the new individual always has the recombined genes of both the parents.
संबंधित प्रश्न
Define the Zygote.
Suppose a normal woman has never borne a child; How many mature eggs would she have produced in her lifetime? Your calculation should be based on two clues-
(a) Eggs are produced at the rate of 1 egg every 28 days (one menstrual cycle)
(b) A woman’s total reproductive period is 13 – 45 years.
Choose the odd one in each of the following:
Sperm; implantation; fertilization; ovum; afterbirth
Give the appropriate term for the following:
Process of fusion of ovum and sperm.
State whether the following statement is true or false:
Gestation in humans is completed in about 380 days.
Name the following:
Fusion of sperm and ovum.
The diagram given below is that of a developing human foetus in the womb. Study the same and answer the question that follow:
Mention two functions of the parts labelled '2' other than its endocrine functions.
The diagram given below is that of a developing human foetus in the womb. Study the same and answer the question that follow:
Name (any one) hormone produced by the part labelled '2'.
Write in sequence the regions in which a mature sperm travels from the seminiferous tubules up to the urethral opening?
Differentiate
Isogametes and Heterogametes.
Draw a labeled diagram of sperm.
Give Technical Term:
The place where fertilization occurs in the female reproductive system.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Sperm is a single cell.
Multiple choice question.
In human female, the fertilized egg gets implanted in uterus _______.
Write a short note on fallopian tube.
Explain the mechanism of fertilization in humans.
Identify the function of fertilization membrane.
State whether the following statement is True or False. If false, correct the statement :
Human egg has a head, middle piece and tail.
Which hormones are called neurohypophyseal hormones?
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
