Academic session 2026-27, Chapter 8 in the current curriculum.
Welcome to the NCERT Solutions for Class 10 Science - Chapter Heredity and Evolution. This page offers a step-by-step solution to the specific question from Exercise 0, Question 30:
In human beings, the statistical probability of getting either a male or female child is 50 : 50. Give a suitable explanation.
. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.In human beings, the statistical probability of getting either a male or female child is 50 : 50. Give a suitable explanation.
Sex of the child is determined by the chromosome donated by the male. During spermatogenesis, X or Y gametes are produced in males but in females only X type of ovum is produced. Thus there is an equal possibility of fertilization of the ovum with sperm having X or Y chromosome. If the child inherits X chromosome from the male then it would be a girl and if the child inherits the Y chromosome from the male then it would be a boy, therefore the probability of getting either male or female is 50- 50%. Sex of the child is only determined by the chromosome of the father.
In the following crosses write the characteristics of the progeny
| Cross | Progeny |
|---|---|
|
(a) RR YY x RR YY |
................................... |
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
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Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 30: In human beings, the statistical probability of getting either a male or female child is 50 : 50. Gi....
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