What is true about the isolated small tribal populations?

There is a decline in population as boys marry girls only from their own tribe

Hereditary diseases like colour blindness do not spread in the isolated population

Wrestlers who develop strong body muscles in their lifetime pass this character on their progeny

There is no change in population size as they have a large gene pool

Solution

Hereditary diseases like colour blindness do not spread in the isolated population

The population can be defined as a group or assemblage of organisms of the same species that live at a given time in a particular area. In human beings a dominant X- linked gene is necessary for the formation of colour sensitive cells the cones, in the retina of the eye. The recessive form of this gene is incapable of producing the colour sensitive cones and homozygous recessive female and hemizygous recessive males are unable to distinguish between these two colours. As the isolated population do not have any hereditary diseases like colour blindness, so they do not spread accordingly.
According to the theory of inheritance of acquired characters of Lamarck the Wrestlers, who develop strong body muscles in their lifetime, must pass this character onto their progeny, but this is not found true.
Gene pool is defined as the sum total of genes present in a Mendelian population. The study of gene pools tells us the total number of genes, their kinds and variety present in the population.

Some More Questions From Organisms and Populations Chapter

Fill in the blanks with suitable words :

1. The optimal capacity of the organism to produce offspring is called........................

2. Rapid increase in human population is called........................

3. Mathematical expression of the growth of population is called........................

4. Yeast cells grown in a culture medium show........................growth curve.

5. Main cause of population explosion is........................

State true or false :

Coin one word for the following statements :
1.Organism that can tolerate only a narrow range of salinity.

2. Plants that can survive a wide range of temperature.

3. Interaction of two species in which one is benefited while other is neither benefited nor harmed.

4. Number of births during a given period in the population that are added to the initial density.

5. the process of maintaing a constant body temperature.

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Organisms And Populations

Some More Questions From Organisms and Populations Chapter

The departure of a individual from a population is called :

In which interaction only one species is benefitted while the other species is neither harmed nor benefitted ?

Which of the following interaction both species suffer ?

In which of the following interaction both species are benefitted ?

State true or false :

A few organisms can tolerate and thrive in a wide range of temperature, they are called........................

Majority of organisms are restricted to a narrow range of temperature, such organisms are called ........................

The organisms ideally try to maintain the constancy of its internal environment by the process called........................

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