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The drug RU-486 is taken after sexual intercourse. It blocks implantation, and in this sense it prevents pregnancy:
The fruit fly Drosophila melanogaster was found to be very suitable for experimental verification of the chromosomal theory of inheritance by Morgan and his colleagues because:
What is true for IUDs? I: They are self-inserted II: They are inserted by expert nurses III: They may be non-medicated IUDs, copper releasing IUDs or hormone releasing IUDs. IV: They are the one of the most widely accepted contraceptives in India. V: They are inter-uterine devices
Match the following contraceptive methods (Column-I) with their correct categories (Column-II): Column I Column II A. Coitus Interruptus (i) Natural methods B. LNG- 20 (ii) IUDs C. Diaphragms (iii) Barrier Methods D. Multiload 375 (iv) Surgical Methods E. Saheli (v) Oral Contraceptives <br>
Which one of the following plants shows vexillary aestivation and diadelphous stamens?
Sweet potato is a modified:
Which of the following is a correct match regarding Intra Uterine Devices (IUDs)?
Given below are four methods (A-D) and their modes of action (1-4) in achieving contraception. Select their correct matching from the four options that follow:<br><br>Column I<br>A. The Pill<br>B. Condom<br>C. Vasectomy<br>D. Copper T<br><br>Column II<br>1. Prevents sperms reaching cervix<br>2. Suppress sperm motility<br>3. Prevents ovulation<br>4. Semen contains no sperms
As per ABO blood grouping system, the blood group of father is B+, mother is A+ and child is O+. Their respective genotype can be
Match the contraceptive method 'Pill' with its primary mode of action: I. Pill
Select the correct statement:
If two persons with 'AB' blood group marry and have the sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in 1: 2: 1 ratio. The modern technique of protein electrophoresis reveals the presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of:
Which of the following is NOT an autosomal recessive disorder?
What change occurs by changing one base in DNA?
Gout is a type of disorder which leads to:
Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate?
Consider the two surgical procedures (A and B) given below and choose the correct statement:
In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, what percentage of the offspring will be tall with red fruit?
Match the Assisted Reproductive Technologies (ARTs) with their correct descriptions: I. Collected gametes are made to form the zygote in the laboratory. II. Zygote or early embryo with upto 8 blastomeres is transferred into the oviduct. III. Zygote with more than 8 blastomeres is transferred into the uterus. IV. Fusion of gametes within the female. V. Transfer of ovum from a donor to the oviduct of the recipient. VI. Sperm is injected into the ovum in-vitro.
Contraceptive oral pills help in birth control by: