Skip to main content

QB: Genetics- Chapter 1

Chapter 1: Introduction to genetics
2 marks:
Explain the following terms (for two marks)
1.     Genetics
2.     Allele
3.     Dominant
4.     Recessive
5.     Progeny
6.     Law of dominance
7.     Law of purity of gametes
8.     Law of independent assortment
9.     Homozygous
10.                         Heterozygous
11.                        Phenotypic ratio
12.                        Genotypic ratio
13.                        Back cross
14.                        Test cross
15.                        Monohybrid
16.                        Dihybrid
17.                        Gene
4 marks:
1.     Explain the first law of Mendel or Explain law of Dominance.
2.     Explain the second law of Mendel or Explain law of purity of gametes.
3.     What is test cross? Explain its types with help of cross.
8 marks:
1.     Explain the third law of Mendel or Explain law of independent assortment.



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. ...
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...
Post a Comment
Read more