1. Amniocentesis is the pre-natal diagnostic technique in which a sample of amniotic fluid from the womb of a pregnant woman is taken during early stages of embryonic development and the cells are cultured and analysed synthetically.
2. Any chromosomal disorder or a metabolic error can be detected and if necessary MTP can be advised.
3. But this technique is misused for knowing the sex of the foetus followed by female foeticide.
4. Female foeticide refers to aborting the female in the mother's womb.
5. In order to prevent female foeticide and infanticide, Government of India has taken various steps like PCPNDT Act .(preconception and prenatal diagnostic technique act-1994) enacted to ban the identification of sex and to prevent the use of prenatal diagnostic techniques for selective abortion.

(i) Creating awareness and providing medical assistance to build a healthy society.
(ii) Introducing sex education in schools to provide information about adolescence and adolescence related changes.
(iii) Educating couples and those in the marriageable age groups about the available birth control methods and family planning norms. 

The method I suggest is Artificial lnsemination Technique (AI)
1. In AI, the semen is collected either from the husband or a healthy donor and then artificially introduced into the vagina or into the uterus (IUI- Intra Uterine Insemination) of the female.
2. It is commonly used in cases where male partner are unable to inseminate the female due to very low sperm counts in the ejaculate.

A - Barrier methods
B - Lactational amenorrhoea
C - Tubectomz
D - CuT

Amniocentesis: It is a prenatal technique used to detect any chromosomal abnormalities in the foetus and it is being often misused to determine the sex of the foetus.
Once the sex of the foetus is known, there may be a chance of female foeticide. Hence a statutory ban on amniocentesis is imposed. 

Sexually transmitted diseases (STD) or veneral diseases(VD) or Reproductive tract infections (RTI) are called as Sexually transmitted infections (STI).
Transmissions:
1. Normally STI are transmitted from person to person during intimate sexual contact with an infected partner.
2. Infections like Hepatitis-B and HIV are transmitted sexually as well as by sharing of infusion needles, surgical instruments, etc with infected people, blood transfusion (or) from infected mother to baby.
3. People in the age of 15 to 24years are prone to these infections.
4. The bacterial STI are gonorrhoea syphilis, chancroid, chlamydiasis and lymphogranuloma venereum.
5. The viral STI are genital herpes, genital warts Hepatitis-B and AIDS.
6. Trichomoniasis is a protozoan STI, and candidiasis is a fungal STI.

The major sexually transmitted diseases are
(i) Gonorrhoea
1. Causative agent: Neisseria gonorrhoeae
2. Symptoms: Affects the urethra, rectum and throat and in females the cervix also get affected
3. Pain and pus discharge in the genital tract and burning sensation during urination.
4. Incubation period: 2 to 5 days
(ii) Syphilis
Causative agent : Treponema pallidum
Symptoms:
1. Primary stage: Formation of painless ulcer on the external genitalia.
2. Secondary stage : Skin lesions, rashes, swollen joints and fever and hair loss.
3. Tertiary stage : Appearance of chronic ulcers on nose. Lower legs and palate, loss of movement mental disorder visual impairment, heart problems, gummas (soft non-cancerous growths) etc.
(iii) Hepatitis B
1. Causative agent: Hepatitis B virus (HBV) with DNA.
2. Symptoms: Fatigue, jaundice, fever, rash and stomach pain.
3. Liver cirrhosis and liver failure occur in the later stage.
4. Incubation period: 30-80 days
(iv) AIDS:
1. Causative agent: Human immuno deficiency Virus (HIV) .
2. Symptoms: Enlarged lymph nodes, prolonged fever, prolonged diarrhoea, weight reduction, night sweating.
3. Incubation periods: 2 to 6 weeks even more than 10 years