English
Karnataka Board PUCPUC Science 2nd PUC Class 12

In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?

Advertisements
Advertisements

Questions

In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?

Women are often blamed for producing female children. Consequently, they are ill-treated and ostracized. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?

Explain
Advertisements

Solution

Blaming women in our society for having girls is incorrect because the father determines the sex of the baby, not the mother. As we all know, the human female chromosome pattern is XX, while the male is XY. As a result, all haploid gametes produced by the female (ova) have the sex chromosome X, whereas male gametes (sperms) can have either X or Y; therefore, 50% of sperms carry the X chromosome, and the other 50% have the Y. Following the fusing of the male and female gametes, the zygote would bear either XX or XY depending on whether the sperm carrying X or Y fertilized the ovum. The zygote bearing XX would produce a female baby, while XY would produce a male. As a result, the baby’s sex is determined by male sperm rather than female ova.

shaalaa.com

Notes

Students should refer to the answer according to their questions.

  Is there an error in this question or solution?
Chapter 2: Human Reproduction - EXERCISES [Page 40]

APPEARS IN

NCERT Biology [English] Class 12
Chapter 2 Human Reproduction
EXERCISES | Q 19. | Page 40
Nootan Biology [English] Class 12 ISC
Chapter 2 Human Reproduction
NCERT EXERCISES | Q 19. | Page 117
Nootan Biology [English] Class 12 ISC
Chapter 3 Reproductive Health
HIGHER ORDER THINKING SKILLS QUESTIONS (HOTS) | Q 1. (i) | Page 140
Nootan Biology [English] Class 12 ISC
Chapter 3 Reproductive Health
HIGHER ORDER THINKING SKILLS QUESTIONS (HOTS) | Q 1. (ii) | Page 140

RELATED QUESTIONS

How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?


The fusion of the male and the female gametes is called ______.


Briefly describe the process of spermatogenesis.


Implantation of embryo occurs in ______.


Describe the process of oogenesis in human female.


If newborns are produced at the age of menopause, they may be with some abnormalities. Why?


Mention the differences between spermiogenesis and spermatogenesis.


Expand the acronym.

hCG


Which of the following occurs during maturation phase of spermatogenesis?


Identify the longest period of menstrual cycle.


The immature male germ cells differentiates into ______ at the end of meiosis I. 


Four primary spermatocytes give rise to ______.


Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?


Which of the following contains a fluid filled cavity called antrum?


It The cell division in secondary oocyte is suspended at ______.


Connective tissue around seminiferous tubules possess endocrine cells called ______.


Which among the following has 23 chromosomes?


The cell which undergoes meiosis I during spermatogenesis is the ______.


Identify the wrong statement from the following.


How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.


Cells of corona radiata remain grouped together by ______.


1st polar body is formed at which stage of oogenesis?


Observe the given figure and answer the questions that follow.

  1. Label A and B.
  2. Identify the process.
  3. What happens during this process and what is formed?

Sperms can be stored for several years in liquid nitrogen with a temperature of ______.


The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.


Distinguish between human sperm and ovum.


The diagram given below shows the various steps in spermatogenesis.

  1. Name the parts labelled '1', '2' and '3'.
  2. Name the process by which part '3' changes to part '4'.

The process of gametogenesis is initiated by ______ and ______ hormones respectively.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×