How to solve genetics probability problems

How to solve a genetic problem

You will need
  • - notebook;
  • - A textbook on genetics;
  • - a pen.
Instruction
First you need to determine the type of the proposed task. To do this, you will have to find out how many gene pairs are responsible for the development of the proposed traits, which traits are considered. To learn homo-or heterozygous organisms in this case intersect, and whether the inheritance of a particular trait is connected with sex chromosomes.
Find out which of the proposed features for the study is recessive (weak), and which is dominant (strong). At the same time, when solving a genetic problem, it is necessary to build on the premise that the dominant trait in descendants will always appear phenotypically.
Determine the number and type of gametes (germ cells). It should be borne in mind that gametes can only be haploid. Accordingly, the distribution of chromosomes during their division occurs evenly: each of the gametes will contain only one chromosome taken from a homologous pair.

Video: Solving Genetics Problems


Images: How to solve a genetic problem How to solve a genetic problem
Images: How to solve a genetic problem How to solve a genetic problem
Images: How to solve a genetic problem How to solve a genetic problem