Pedigree analysis is very important in human beings because

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4.Principles of Inheritance and Variation

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Pedigree analysis is very important in human beings because

It helps genetic counselers to avoid disorders

It shows origin of traits

It shows the flow of traits in family

All of the above

Solution

The study of inheritance of genetic traits in several generations of a human family in the form of a family tree diagram is called pedigree analysis.

Advantages

$(i)$ It helps in genetic counselling to avoid disorders

$(ii)$ It shows the origin of a trait and flow of a trait in a family

$(iii)$ It is important to know the possibility of a recessive allele that can cause genetic disorders like colour blindness, haemophilia, etc. Signosed in the pedigree are

Standard 12

Biology

A husband and wife have normal vision but fathers of both of them were colour blind. Probability of their first daughter to be colour blind is

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(AIPMT-1990)

Study the given pedigree chart and select the correct option of the given question.

$(1)$ Is the trait recessive of dominant ?

$(2)$ is the trait sex linked or autosomal ?

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A normal visioned woman, whose father is colour blind, marries a normal visioned man. What would be probability of her sons and daughters to be colour blind ? Explain with the help of a pedigree chart.

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If a character is always transmitted directly from a father to all his sons and from their sons to all their sons, then which chromosome carries the gene for the character

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Sickle cell anaemia is

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Pedigree analysis is very important in human beings because

Solution

Similar Questions

A husband and wife have normal vision but fathers of both of them were colour blind. Probability of their first daughter to be colour blind is

Study the given pedigree chart and select the correct option of the given question. $(1)$ Is the trait recessive of dominant ? $(2)$ is the trait sex linked or autosomal ?

A normal visioned woman, whose father is colour blind, marries a normal visioned man. What would be probability of her sons and daughters to be colour blind ? Explain with the help of a pedigree chart.

If a character is always transmitted directly from a father to all his sons and from their sons to all their sons, then which chromosome carries the gene for the character

Sickle cell anaemia is

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Study the given pedigree chart and select the correct option of the given question.

$(1)$ Is the trait recessive of dominant ?

$(2)$ is the trait sex linked or autosomal ?