Skip to main content

QB: Genetics- Chapter 2

Chapter 2: Gene Interaction
2 marks:
1.     What is gene interaction?
2.     What is dominance
3.     Explain co- dominance
4.     What is incomplete dominance?
5.     What is epistasis?
6.     What are lethal genes?
4 marks:
1.     Explain co-dominance with help of suitable example. (write example with cross. explanation NOT expected)
2.     Explain incomplete dominance with help of suitable example. (write example with cross. Explanation NOT expected)
3.     Explain complementary factor with help of suitable example. (write example with cross. Explanation NOT expected)
4.     Explain supplementary factor with help of suitable example. (write example with cross. Explanation NOT expected)
5.     Explain inhibitory factor with help of suitable example. (write example with cross. Explanation NOT expected)
6.     Explain duplicate dominant factors with help of suitable example. (write example with cross. Explanation NOT expected)
8 marks:
1.     Explain complementary factor with help of suitable example. (write cross with explanation)
2.     Explain supplementary factor with help of suitable example.
3.     Explain inhibitory factor with help of suitable example.
4.     Explain duplicate dominant factors with help of suitable example

16 marks:

Any two questions of 8 marks may be combined and asked
Labels:

Comments

Post a Comment

Popular posts from this blog

Parthenogenesis When development of organism takes place without fertilization, the process is called as parthenogenesis. Parthenogenesis is of two types viz. 1.       Natural 2.       Artificial Natural parthenogenesis: ·          Eggs that develop without fertilization naturally, the process is called as natural parthenogenesis. ·          It is commonly seen in Aphids, Phyllopods and Rotifers at sometimes of the years not always ·          Whereas in case of bees and wasps males are always produced from unfertilized egg. Thus, males are always haploid and females are diploid because females are produced from fertilized egg. ·          In some species such as Tenthredinidae, reproduction is alays parthenogenetically and males of this species are not known. Artificial parthenogenesis: ·          In normal conditions some eggs do not develop unless they are fertilized. ·          In such conditions, when ripe egg is induced artificially the development start
Post a Comment
Read more

Starfish: External Characteristics

STARFISH SYSTEMATIC POSITION Kingdom: Animalia    Phylum: Echinodermata       Class: Asteroidae          Order: Forcipulata             Family: Asteriidae               Genus:   Asterias                  Species:   rubens HABIT & HABITAT: 1.        Asterias is exclusively marine in nature 2.        It is mostly found on sea costs and in shore waters 3.        It generally prefers rocky areas where locomotion and concealment is easier 4.        It is bottom dwelling benthoic organism 5.        It clings to submerged objects by firmly attaching to them. 6.        It is solitary in nature in normal conditions 7.        Asterias is strongly positive towards light whereas other genus are negative towards light 8.        It is carnivorous and voracious feeder 9.        It is nocturnal in nature 10.   It shows remarkable power of autotomy and regeneration EXTERNAL CHARACTERISTICS: A.        SIZE & SHAPE: 1.        Body is star
Post a Comment
Read more
Introduction to Cell Biology -          Cell was discovered by Robert hook -          He has observed compartment like structure in section of cork -          Cell Theory:  All organisms are made up of cells. This theory was proposed by Scheilden & Schwan -           Modified version o f Cell theory: All the organisms are made up of cell & cell products. -          Types o f Cells:  There are two types of cells viz. 1.      Prokaryotic cell 2.      Eukaryotic cell 1.      Characters of Prokaryotic Cell:                                i.             The cells in which nuclear membrane and cell organelles are absent are called as prokaryotic cell.                              ii.             The region in prokaryotic cell where DNA is present is called as nucleoid region/nuclear region .                           iii.             DNA is in the form of circular DNA.                           iv.             Different enzymes required for cellul
Post a Comment
Read more