<span>The angiosperms became more common during the cretaceous period. The Cretaceous period occurred almost 144 million years ago and it followed the Jurassic period. </span>
Hey there!
Your answer is:
There are alternate versions of a gene.
Hope this helps!
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Answer:
option B
Explanation:
there are 22 pair of autosome and 2 pair of sex chromosome
When tiny ice crystals in clouds stick together to form snowflakes, the result is snow. If enough crystals form a clump, they'll become heavy enough to fall to the ground. When temperatures are cold and moisture in the form of tiny ice crystals exists in the atmosphere, snow forms.
