Answer:
2) End Triassic
Explanation:
End Triassic extinction occurred 201 million years ago. It was caused by the rifting of super continent Pangea. Pangea started to break and drift apart. When North america started to separate from Africa, volcanic activity increased. Lava and a large amount of gas was released into the atmosphere specially carbon dioxide. This led to global warming like condition which ultimately caused extinction of a large number of species.
The answer is <span>C) Bb x Bb
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B - the allele for black and white coloration
b - the allele for brown and white coloration
There are in total 11 offspring (<span>8 black and white and 3 brown and white),
In a monohybrid cross when both parents are heterozygous (Bb), the phenotype ratio is 3:1. We have ratio 8:3.
The ideal ratio would be 9:3 because it is the same as 3:1.
Therefore, the parents Bb and Bb will have </span>8 black and white and 3 brown and white with the ration 8:3 ≈ 9:3 = 3:1
Adenine, thymine, guanine, and cytosine
adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Im gonna go with 1.0cm hope this helps and if not I'm srry
Answer:
A. flowers that bloom in different months
Explanation:
Temporal isolation is a prezygotic barrier that is caused by the inability of two closely related species to interbreed as a result of differences in breeding season.
If two related species of plants have flowers that bloom in different months, the possibility of both fertilizing each other is very slim. Both flowers won't be able to interbreed as a result of this reproductive isolation mechanism, called temporal isolation.