1 Answer
A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project has estimated that humans have between 20,000 and 25,000 genes.
Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
11 years ago. Rating: 2 | |
Top contributors in Other - Science category
Unanswered Questions
789winwedding
Answers: 0
Views: 4
Rating: 0
sv388info
Answers: 0
Views: 1
Rating: 0
kq18h30com
Answers: 0
Views: 4
Rating: 0
Go88
Answers: 0
Views: 9
Rating: 0
IELTS MENTOR
Answers: 0
Views: 11
Rating: 0
Go88 update phiên bản mới cho Android, IOS, bản web đa dạng game bài, nổ hũ, casino đặc sắc. Đặc biệt Go88 tặng quà khủng 2024 Go88 phiên bản Android, IOS mới. Go88 ưu đãi lớn 2024
Answers: 0
Views: 6
Rating: 0
Go88 update phiên bản mới cho Android, IOS, bản web đa dạng game bài, nổ hũ, casino đặc sắc. Đặc biệt Go88 tặng quà khủng 2024 Go88 phiên bản Android, IOS mới. Go88 ưu đãi lớn 2024
Answers: 0
Views: 5
Rating: 0
789club02com
> More questions...
Answers: 0
Views: 16
Rating: 0