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- Dictionaryhomologous/həˈmɒləɡəs/
adjective
- 1. having the same relation, relative position, or structure.
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Examples of Homologous series. The successive members vary from each other by a CH 2 unit. For example in CH 4 and C 2 H 6, the difference is -CH 2 unit and the difference between C 2 H 6 and C 3 H 8 is also -CH 2 unit. So CH 4, C 2 H 6, and C 3 H 8 are homologs. The same thing can be observed in the case of alkenes in which the first member is ...
A homologation reaction refers to a reaction in which there is an increase in the number of repeating groups of a particular compound. Due to this, the compound becomes a different member in its homologous series. Consider the example of the Ardnt-Eistert homologation process. This process increases the number of repeating units in a carboxylic ...
Q. (a) Define a homologous series. Give the name and structural formula of one homologue of the following: (b) Write the molecular formula of the third member of the homologous series of carbon compounds with general formula C n H 2n+1 OH. (c) Name any two fossil fuels. Q. C3H6,C4H8 and C5H10 belong to the same homologous series.
Q. (a) What is a homologous series? Explain with an example. (b) State two characteristics of a homologous series. (c) The molecular formula of an organic compound is C 18 H 36. Name its homologous series. (d) Select the hydrocarbons which belong to the same homologous series. Give the name of each series.
Homologous Organs: Homologous organs are referred to as the organs/traits that are inherited by two different organisms but from the same ancestry. They are similar in morphology but their functions are different. Homology was introduced by Charles Darwin in 1859. They have the same embryonic origin.
Structure of Homologous Chromosomes. The basic parts of a homologous chromosome include –. The length of the arm and the position of the centromere plays a vital role in determining the homogeneity of the chromosomes. Based on the position of the centromere, they can be metacentric, acrocentric, telocentric and submetacentric.
Define homologous chromosomes. Homologous chromosomes are chromosome pairs containing a maternal and a paternal chromatid that are similar in length, gene position, and are joined at the centromere. The position of the genes on each homologous chromosome is the same, however, they may contain different alleles of the genes. Was this answer helpful?
Characteristics of a homologous series are: (i) Each member of the series can be represented by a general formula. (ii) All the members of the series can be prepared by the same general methods. (iii) Physical properties change throughout the series in a regular way. (iv) Members of homologous series have similar chemical properties.
An arm of a human, the leg of a dog or a flipper of a whale are all homologous structures. From wings in birds, bats and insects to fins in penguins and fishes are all analogous structures. These were a few differences between analogous and homologous structures. From this, we can conclude that the main difference between homologous and ...
The homologous organs are similar in form (or are embryologically same), but perform different functions in different organisms.These provide strong evidence in the favour of evolution.
