Rechercher
Gene
01
gène
(genetics) a basic unit of heredity and a sequence of nucleotides in DNA that is located on a chromosome in a cell and controls a particular quality
What is a "gene"?
A gene is a segment of DNA that provides the instructions for making proteins, which are essential for the body's growth, development, and overall functioning. Genes influence traits such as eye color, blood type, and the likelihood of developing certain diseases. They are passed from parents to children and can affect how the body responds to environmental factors and treatments.
Exemple
The gene for brown eyes is dominant over the gene for blue eyes.
The gene for brown eyes is dominant over the gene for blue eyes.
An organism with one allele for brown eyes and one for blue eyes is a heterozygote for the eye color gene.
Abnormal expression of certain genes can lead to the development of cancer.
Pea plants with two alleles for yellow seeds are homozygotes for the seed color gene.
