Biology Practicals Class 12
Pedigree Charts: Genetic Traits in Generations
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About Simulation
- In this biology practical class 12, we will learn to analyze and interpret the prepared pedigree charts.
- Learners will study about autosome-linked dominant traits through the analysis of pedigree charts along with their examples in this biology practical.
- This biology practical will also help the learner analyze the autosome-linked recessive traits pedigree chart along with its examples.
- Learners will study about X-linked dominant traits through the analysis of pedigree charts and their examples.
- Along with X-linked dominant traits, learners will study about X-linked recessive traits through the analysis of pedigree charts along with their examples.
- This virtual biology lab will help learners to understand Y-linked traits through the analysis of pedigree charts along with their examples.
Simulation Details
Description
Pedigree charts are used to study the Mendelian concept of dominance and segregation in humans.
Mendelian genetics helps us understand the inheritance pattern in traits controlled by a single gene, whether it is present on dominant or recessive alleles.
A careful examination of the pedigree chart would help us know whether the gene for the particular character is linked with a dominant or recessive allele.
In this biology class 12 experiment, we will also understand about the internationally approved symbols used in the pedigree charts.
Depending upon whether the alleles are associated with autosomal or sex chromosomes, pedigree charts are prepared as:
Autosome-Linked Dominant Traits: In these traits, the encoding gene is present on any one of the autosomes. The mutant allele is dominant to its wild-type alleles.
Autosome-Linked Recessive Traits: In these traits, the encoding gene is present on any one of the autosomes. The mutant allele is recessive to its wild-type alleles.
X-Linked Dominant Traits: In these traits, the encoding gene is present on the X – chromosome. The mutant allele is dominant to its wild-type alleles.
X – Linked Recessive Traits: In these traits, the encoding gene is present on the X – chromosome. The mutant allele is recessive to its wild-type alleles.
Y – Chromosome Linked Traits: In these traits, the encoding gene is present on the Y – Y-chromosome. These traits are also called male-sex limited traits.
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Requirements for this Science Experiment
⦁ Pedigree Charts
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