How many genes make up the human genome? four: adenine, thymine, guanine, and cytosine 23 pairs of genes 20,000–25,000 genes 3 billion genes

20,000-25,000

Explanation:

Adenine, thymine, guanine, and cytosine are the four nitrogenous bases that make up DNA.

Humans cant have three million genes, its just not possible.

there are 23 Pairs of Chromosomes

(chromosomes are the things that store genes)

So it has to be 20,000-25,000 genes

The correct answer is 20,000-25,000 genes.

Explanation:

The human genome was fully sequenced during the human genome project which was a 13 year-long project started in 1990 and completed in 2003. During the human genome project it was found that the human genome is made up of 3 billion base pair sequence of DNA.  

These 3 billion base pairs constitute to form 20 to 25 thousand genes present in the chromosomes in the nucleus.  Every cell contains all the genes but only specific genes are expressed in a particular cell according to their function in the tissue.

Therefore, the correct answer is 20,000-25,000 genes.

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answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.