Gravity , Explosion
<u>Explanation:</u>
Nebulae are made of dust and gases—mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger.
Eventually, the clump of dust and gas gets so big that it collapses from its own gravity. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.
<span>In bacteria, DNA polymerase adds an incorrect base to a growing strand of DNA about once in every 100 000 bases added. The result is a mismatch such as the pairing of A with C.
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Yes it is a ORGANELLE in a eukaryotic cells
Answer:
Cada gen puede tener varias variantes, llamadas alelos, que codifican diferentes variantes del rasgo en cuestión. ... Los genes residen en los cromosomas de una célula, cada uno de los cuales contiene muchos genes. Cada célula de cualquier organismo individual contiene el mismo conjunto de cromosomas.
Explanation:
Answer:
squamous epithelium consists of a single layer of flat cells. It is found in lungs,heart and blood vessels.It allows the movement of materials across it.
stratified epithelium has many layer of flat cells.It is present in lining of oesophagus and mouth and also over the skin
