Varations and Genetics to discover how genetic variations shape traits, inheritance patterns, and the process of evolution in living organisms.”
Biology class 12th chapter 8 Notes
Blue cone monochromacy is also called: Red – green colour blindness
The gene for blue opsin is present on autosome: 7
Hereditary characteristics pass from parents to offspring through genes in their: Gametes
If a man of M blood group marries a woman of N blood group all their childern will have blood group: MN
The most important hormone in initiating and maintaning lacation after birth is: Prolatin
ABO blood group system was discovered by: Karn Ladsteiner
80% haemophiliacs suffer from haemophilia A due to abnormality of factor: VIII
A clear picture of the genetic basis of sex determination emerged after the discovery of: Sex chromosomes
Human skin colour is also a quantitative trait which is controlled by: 3 – 6 gene pairs
The protective coat which surrounds the embryo is known as: Amnion
A woman can be bald only when she is: Homozygous recessive
ABO system has four different phenotypes which are distinct from each other on the basis of specific antigens on the surface of: RBC
Intelligence is also a case of polygenic inheritance which is strongly influenced by: Environment
The interaction between different genes occupying different loci is: Epistasis
Genes are located at specific loci on: Chromosomes
A monochromat can perceive: Only ane colour
The outer layer of the blastocyst, which laterattaches tothe uterus , is: Trophoblast
A dichromate can perceive two primary colours but is unable to perceive the one whose opsins are missing due to: Mutation
Identical twins result from the fertilization of: One ovum by the sperm
ABO Blood group system in man is encoded by a oolvmorohic gene I on chromosome: 9
Blood serum containing antibodies is called: Antiserum
The gene for blue opsin is present on autosome: 7
In 1901, ABO grop system was discovered by: Karl Landsteiner
Protonopia is: Red blindness
Identical twins result from the fertilization of: One ovum by the sperm
Human skin colour is controlled by gene pairs: Three to six
Blue cone monochromacy is also called: Red – green colour blindness
A monochromat can perceive: Only ane colour
DNA Polymerase enzyme was isolated from: Bacteria
Important : Review all previous years’ 12 class past papers for comprehensive practice and better exam preparation.