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Question
Write the salient features of the Sutton and Boveri concept.
Solution
Salient features of the chromosomal theory of inheritance:
- Somatic cells of organisms are derived from the zygote by repeated cell division (mitosis). These consist of two identical sets of chromosomes. One set is received from a female parent (maternal) and the other from a male parent (paternal). These two chromosomes constitute the homologous pair.
- Chromosomes retain their structural uniqueness and individuality throughout the life cycle of an organism.
- Each chromosome carries specific determiners or Mendelian factors which are now termed as genes.
- The behavior of chromosomes during the gamete formation (meiosis) provides evidence to the fact that genes or factors are located on chromosomes.
RELATED QUESTIONS
If centromere is situated in the middle of the chromosome, it is called ________.
(a) Metacentric
(b) Acrocentric
(c) Submetacentric
(d) Telocentric
Define the term ‘genome’.
Who had proposed the chromosomal theory of the inheritance?
Describe the structure of chromosomes with a suitable diagram.
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A B B C C D E F G H I
From the above figure identify the type of mutation and explain it.
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What is the possible genotype in the F2 generation?
Identify the scientists who proposed chromosomal theory of inheritance.
Which of the following does NOT agree with chrotnosomal theory of inheritance?
A plant having the genotype AABbCC will produce ______ kinds of gametes.
Extranuclear inheritance is a consequence of presence of genes in ______.
Mendel’s work was rediscovered by three scientists in the year ______.
Chromosomal theory of inheritance was given by ______.
Chromosome maps/genetic maps were first prepared by ______.
Which of the following phase follows S and G2 phases of interphase?
Experimental verification of the chromosomal theory of inheritance was done by ______.
A haemophilic man marries a carrier woman and they have a daughter. What is the probability of their daughter being haemophilic?
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Name the scientist who discovered the X chromosome.
Consider the following information and answer the question that follows:
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Make a single pedigree chart using the above information to show the pattern of inheritance of phenylketonuria (PKU) in the family of Reshma.
