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Genetics and Inheritance 1


Definition of Genetics and Understanding the Laws of Inheritance in living organisms. Determining how individuals and children inherit certain traits (DNA sequences) from their parents. Scientific Principles and Theories of Inheritance.

Practice Quiz

Welcome to your Genetics Quiz 1

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It is the set of observable characteristics or traits of an individual resulting from the interaction of its genes.
He is the Father of Genetics. Through his work on pea plants, he discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent.
It is the basic physical and functional unit of inheritance. It is are made up of DNA. In humans, they vary in size from a few hundred DNA bases to more than 2 million bases.
It is an allele whose expression or trait has been suppressed due to the presence of an overpowering allele.
It is is the part (DNA sequence) of the genetic makeup of an organism or individual, which determines a specific characteristic of that organism/individual.
This Law of Inheritance states that recessive alleles will always be masked by dominant alleles.
This Law of Inheritance says that the alleles that make up a gene pair separate from each other, during the formation of gametes in meiosis.
This Law of Inheritance says that during gamete formation the segregation of the alleles of one allelic pair is independent of the segregation of the alleles of another allelic pair.
It is a type of cross between two parents that differ by two pairs of alleles (e.g. AABB x aabb)
The Punnett Square is used to calculate the frequency or probability of all possible genotypes of off springs in a genetic cross. Who developed the Punnett Square ?

This includes the structure and function of genes (DNA sequences), gene behaviour in the context of a cell or organism and how certain illnesses, or increased risks for certain illnesses, pass from generation to generation.


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