What is pedigree analysis? Suggest how such an analysis, can be useful.
What is pedigree analysis? Suggest how such an analysis, can be useful.
Pedigree analysis is a record of occurrence of a trait in several generations of a family. It is based on the fact that certain characteristic features are heritable in a family, for example, eye colour, skin colour, hair form and colour, and other facial characteristics. Along with these features, there are other genetic disorders such as Mendelian disorders that are inherited in a family, generation after generation. Hence, by using pedigree analysis for the study of specific traits or disorders, generation after generation, it is possible to trace the pattern of inheritance. In this analysis, the inheritance of a trait is represented as a tree, called family tree. Genetic counselors use pedigree chart for analysis of various traits and diseases in a family and predict their inheritance patterns. It is useful in preventing hemophilia, sickle cell anemia, and other genetic disorders in the future generations.
Similar Questions
Choose incorrect statement for haemophilia.
Choose incorrect statement for haemophilia.
:Match the columns :
Column $I$
Column $II$
$(a)$
Sickle cell anaemia
$(p)$
Homogentisic acid
$(b)$
Alkaptonuria
$(q)$
Lack of Melanin
$(c)$
Albinism
$(r)$
Accumulation of Amino acid
$d)$
Phenyl Ketonuria
$(s)$
Defective haemoglobin
:Match the columns :
| Column $I$ |
Column $II$ |
||
| $(a)$ | Sickle cell anaemia | $(p)$ | Homogentisic acid |
| $(b)$ | Alkaptonuria | $(q)$ | Lack of Melanin |
| $(c)$ | Albinism | $(r)$ | Accumulation of Amino acid |
| $d)$ | Phenyl Ketonuria | $(s)$ | Defective haemoglobin |
Colour blindness is caused by a single
Colour blindness is caused by a single
Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be
Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be
A man with normal vision whose father was colourblind marries with women whose father was also colourblind. Suppose their first child is daughter then what are the chances of this child to be colourblind?
A man with normal vision whose father was colourblind marries with women whose father was also colourblind. Suppose their first child is daughter then what are the chances of this child to be colourblind?