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प्रश्न
Name the kind of diseases/disorders that are likely to occur in humans if
(i) mutation in the gene that codes for an enzyme phenyl alanine hydrolase occurs,
(ii) there is an extra copy of chromosome 21,
(iii) the karyotype is XXY.
उत्तर
(i) Phenylketonuria is the disorder that occur in humans due to the mutation in the gene (phenylalanine) that codes for an enzyme phenylalanine hydroxylase.
(ii) Down syndrome is the disorder that occur in humans if there is an extra copy of chromosome no. 21.
(iii) Klinefelter's syndrome is the disorder that occur in humans if the karyotype is XXY.
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संबंधित प्रश्न
Your school has been selected by the Department of Education to organize and host an interschool seminar on “Reproductive Health – Problems and Practices”. However, many parents are reluctant to permit their wards to attend it. Their argument is that the topic is “too embarrassing.” Put forth four arguments with appropriate reasons and explanation to justify the topic to be very essential and timely.
Reproductive and Child Healthcare (RCH) programmes are currently in operation. One of the major tasks of these programmes is to create awareness amongst people about the wide range of reproduction related aspects. As this is important and essential for building a reproductively healthy society.
(a) "Providing sex education in schools in one of the ways to meet this goal." Give four points in support of your opinion regarding this statement.
(b) List any two 'indicators' that indicate a reproductively healthy society.
Do you think that reproductive health in our country has improved in the past 50 years? If yes, mention some such areas of improvement.
What does IUCD indicate?
What is the causative organism for Gonorrhoea?
Name one method of contraception which also protects against sexually transmitted diseases.
Name the contraceptive device used by human females which is put over the cervix.
Describe the surgical methods of birth control for men
What is done in the contraception method known as tubectomy?
Which method of contraception prevents fertilised egg from being implanted in the uterus?
What substances are contained in oral pills, used as contraceptives? How do they work?
What substances are contained in vaginal pills, used as contraceptives? How do they work?
People who die from AIDS are not killed by the virus itself. Explain.
Which of the following method of contraception protects a person from acquiring a sexually transmitted disease?
(a) oral pills
(b) condom
(c) copper-T
(d) surgery
The sexually transmitted disease which is caused by bacteria is :
(a) malaria
(b) diarrhoea
(c) gonorrhoea
(d) AIDS
In the surgical method of birth control available for human females, the structures P in the reproductive system are cut and ligated (tied up) properly at both ends. This prevents the reproductive cell Q released by an organ R from entering the structures P so that Q is not available to fuse with another reproductive cell S coming from the male reproductive system. In this way, pregnancy is prevented.
(a) What are structures P?
(b) What is cell Q?
(c) Name the organ R.
(d) What is the reproductive cell S?
(e) What is the name of this surgical method of birth control available to females?
A woman uses pills A as a method of birth control (or preventing pregnancy). The pills A stop the ovaries from releasing ovum into oviducts. Another woman uses pills B as a method of birth control. The pills B kill the sperms and prevent pregnancy.
(a) What do the pills A contain?
(b) What is the common name of pills A?
(c) What do the pills B contain?
(d) What is the common name of pills B?
(e) What is the general name of these methods of birth control?
What is contraception ? List three reasons for adopting contraceptive methods.
Write any two Sexually transmitted diseases.
The family planning programmes in India were initiated in ______.
The technique which makes use of amniotic fluid for the detection of prenatal disorder is called as ______.
A dark stained body present in the somatic cells of human female but absent from those of male is ______.
Explain how, offspring and parents of organisms reproducing sexually have the same number of chromosomes?
Observe the chart and graph given in figure carefully and answer the following questions.
| Age in Years | % of full height | |
| Boys | Girls | |
| 8 | 72% | 77% |
| 9 | 75% | 81% |
| 10 | 78% | 84% |
| 11 | 81% | 88% |
| 12 | 84% | 91% |
| 13 | 88% | 95% |
| 14 | 92% | 98% |
| 15 | 95% | 99% |
| 16 | 98% | 99.5% |
| 17 | 99% | 100% |
| 18 | 100% | 100% |
- Which of the line represents the height of boys?
- Which line represents the height of girls?
- What is the difference between the pattern of increase in the height of boys and girls?
- Is this pattern true for each individual?
What is the full form of RCH?
Select the statement which is not correct about reproductive health?
Suggest some important steps that you would recommend to be taken to improve the reproductive health standards in India.
Enumerate and describe any five reasons for introducing sex education to school-going children.
