Serving Quality Education
Serving Quality Education
Pedigree AnalysisInheritance of hundreds of characteristics such as colour blindness, hemophilia, polydactyly, attached earlobes and tongue rolling, have been studied generation after generation in particular families of human beings. In order to understand the pattern of inheritance, a family tree…
Down’s and Patau’s Syndrome Chromosomal abnormalities are responsible for miscarriages and stillbirths. Down’s syndrome and Patau’s syndrome are trisomy disorders, where the individuals have three copies of a chromosome rather than the normal two. Patau’s syndrome (Trisomy of 13th chromosome), is…
Klinefelter’s And Turner’s SyndromeKlinefelter’s syndrome(KS) (47XXY or XXY) and Turner’s syndrome(TS) (45X or X0) are common cases of sex chromosome aneuploidy (SCA). In humans, with an approximate occurrence of KS is 1 in 600 males and TS is 1 in 2,000 female livebirths. Let us understand the…
The myth of the “supermale” and the extra Y chromosome – YouTube From where does the different genes in different organisms come from? Where do genes come from? – Carl Zimmer – YouTube
Alleles and GenesOften the terms alleles and genes are misunderstood to be the same, but gene is the segment of the DNA which control the specific trait in organisms and an allele is the particular variant (alternative) of the gene. For example, the hair…
1 Seven characters with contrasting traits in pea plant studied by Mendel. 2 Common genetic terminology 3 Monohybrid Cross with phenotypic and genotypic ratios 4 Test Cross 5 Dihybrid cross 6 Sex determination in humans 7 Pedigree Analysis 8Multiple alleles/Blood…
1 Mendelian GeneticsGregor Johann Mendel (Father of Genetics) Many experiments were done by Mendel on the garden pea plant (Pisum sativum) between 1856 and 1863. He studied the results of the experiments and deduced many observations. Thus, Mendel’s laws of inheritance…
1 Gamete CalculationTypes of gametes produced can be calculated by the a formula. Go through the given GIF and learn more about it. Where ‘n’ is the number of heterozygous allelesExample: 2 Recombination FrequencyA numerical value that describes the proportion…
Principles Of Inheritance And Variation Mendel’s laws for inheritance of traits Mendel has put forth three laws governing inheritance:1. Law of dominance: Out of a pair of contrasting characters present together, only one is able to express itself while the…
In-vitro Fertilization (IVF)IVF is a type of assisted reproductive technology (ART) that can help an infertile couple bear child. This process refers to fertilizing egg and sperm in laboratory under monitored condition and the zygote or early embryo is then…
Family PlanningThe problem of population explosion is grave is India. To tackle this issue, the government had taken taken several steps and have launched family planning programmess. As a part of this initiative, TV ads were also telecasted to spread…
SurrogacyWell! Every couple dreams to have a child of their own. But unfortunately, not everyone is completely healthy to carry a child. There may be several reasons for it. But what is the solution? Can their dream of having a…
1 Still trying to recollect what caused the rapid increase in population of India? Well, the population probably told to Mary-Dear Mary I‘m Ready to grow (DMIR). 2 Too many types of contraceptive methods puzzling you? Remember them easily by the mechanism of…
Artificial Reproductive Technologies (ARTs)These techniques help the childless/infertile couple bear child. Various types of ARTs include: In-vitro fertilization (IVF): Sperms & egg are fertilized in laboratory under simulated conditions, which is followed by embryo transfer into the uterus. Zygote intra-fallopian transfer…
Mechanism of Action of Oral Contraceptive PillsFemales willing to prevent conception are administered with small doses of progesterone or progesterone-estrogen combinations. These pills are consumed daily for 21 days, starting from preferably first five days of menstrual cycle. They act…
Surgical Methods of ContraceptionSurgical contraceptive methods are irreversible methods of contraception and hence known as sterilization techniques. These may be performed on both males and females. These methods involve cutting and tying a part of reproductive ducts that ultimately prevent the…
All Contraceptives Can Provide Protection Against STIs!STIs spread by sexual contact during intercourse from one infected person to the other. They spread through skin to skin contact with infected body fluids like semen, vaginal fluid, blood, etc. So, the best way to prevent STIs is…
A Person Who Has Contracted HIV Will Get AIDS!HIV stands for Human Immunodeficiency Virus. So HIV is the virus that attacks a person’s immune system making him/her prone to infections. On the other hand, AIDS i.e. Acquired Immunodeficiency Syndrome is the medical condition caused…
Intrauterine Devices or IUDs Do More Harm Than Good?IUDs are inserted into the uterus to prevent pregnancy. These are considered to be the one of the safest methods for contraception. The IUDs ensures contraception by destroying the sperms entering the vagina…