Other combinations of the atoms form the four bases: thymine (T), adenine (A), cytosine (C), and guanine (G). These bases are the rungs of the DNA ladder. It also takes two bases to form a rung, one for each side of the ladder ! I hope this helps .
<span>I think the answer is A test cross can be used to: study how traits are inherited. </span>
Answer:After puffing off its outer layers, the star collapses to form a very dense white dwarf. One teaspoon of material from a white dwarf would weigh up to 100 tonnes. Over billions of years, the white dwarf cools and becomes invisible.
Explanation: googel hope it helps
the answer is d.pacific ocean is the largest ocean in the world it is also the world's deepest ocean.
