Answer to Question #203503 in Genetics for Sam

Question

Apply Mendel’s laws of inheritance to the results of genetic crosses.

Answer 1

Example

Pea plant experiment in genetic crosses

Take, pea shape: round or wrinkled

Pea colour: yellow or green

The results of the experiment when a pea plant was crossed with yellow colour, round seed with green colour wrinkled seed were two parental and two recombinant phenotypes. The parental were yellow round and green wrinkled while the recombinant were yellow wrinkled and green round. This result explains that the traits are separate from the parental combinations and are inherited independently.

Mendel's Laws of inheritance to the results of genetic crosses

1. The Law of Dominance: The offspring always exhibits a dominant trait. From the two alleles received from parents, the only dominant allele is expressed.

2. The Law of Segregation: The two copies of each chromosome are separated from each other, causing the two distinct alleles located on those chromosomes to segregate from one another.

3. The Law of Independent Assortment: The traits inherited through one gene are inherited independently of the traits inherited through another gene because the genes reside on different chromosomes that are independently assorted into daughter cells during meiosis.