Angel~Adrian Project


What is the study of Genetics?

Genetics- is the study of heredity. Heredity is a biological process where a parent passes certain genes onto their children or offspring.

Who discovered genetics and how did he do this?

Gregor Mendel discovered genetics. He studied pea plants. He came up with 3 laws. The first law is Rule of Unit Factors. The second law is rule of dominants. And the third law is law of segregation.

Contrast Terms

Punnett Squares


Big Y is yellow. LIttle y is green. Yy is yellow.Phenotype: Yy- 50% yellow; yy- 50% greenGenotype: Yy- 50%; yy- 50%

Incomplete Dominance

Incomplete dominance inheritance pattern where the phenotype of a heterozygote is intermediate between those of the two homozygotes. Example is indian corn.


Codominance is the pattern where phenotypes of both homozygotes parents are produced in heterozygotes off-spring so that both alleles are equally expressed. Example is a chicken with black and white feathers. An example of this in humans is a group of inherited red blood cell disorders called sickle-cell anemia.

Multiple Alleles

Multiple alleles presence of more than two alleles for a genetic trait. Blood type is important in multiple alleles because if you give someone the wrong blood type, the blood could clump together and cause that person to die. The blood types are A, B AB, and O.

Sex-linked traits

Human traits are determined by genes that are carried on the sec chromosome. Most of the genes are located on the X chromosome. Female is XX and male is XY when you put it on a punnett square.