Answer to Question #152266 in Genetics for l.lk

Question

discussed the concept of inheritance in regards to genetic traits. How does the Chromosomal Theory of Inheritance helped to advance our understanding of genetics?

Answer 1

Genetic inheritance is a basic principle of genetics and explains how characteristics are passed from one generation to the next. Although the offspring receives a combination of genetic material from two parents, certain genes from each parent will donate the expression of different traits.

The chromosomal theory of inheritance, in explaining genetics and inheritance characterizes it that during meiosis, homologous chromosome pairs migrate as discrete structures that are independent of other chromosome pairs.

 Sorting of these chromosomes from each homologous pair into pre-gametes happens randomly.

Each parent synthesizes gametes that contain only half of their chromosomal complement.

Even though male and female gamete, the sperm and egg differ in size and morphology, they have the same number of chromosomes, this suggests genetic contributions from each parent.

The gametic chromosomes combine during fertilization to produce offspring with the same chromosome number as their parents.