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AnnZ [28]
3 years ago
15

An aurora is produced when there is a collision between _____ and _____ in Earth's upper atmosphere.

Biology
1 answer:
denpristay [2]3 years ago
4 0
The answer is D. Charged particles from the sun, known as solar wind, collide with Earth's atmosphere, molecules, etc. Hope this helps.
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In genetics, the dash symbol (–) is a "wild card" that stands for either the dominant allele or the recessive allele; for exampl
bearhunter [10]

Answer:

1/16 are ovoid

Explanation:

Hello!

From an AaBb genotype we can obtain four possible gametes AB, Ab, aB and ab.  With the Punnett square we can observe the crossing.  In the second Punnett square we can see the form A– B–

AB          Ab           aB          ab

AB AABB AABb AaBB AaBb

Ab AABb AAbb AaBb Aabb

aB AaBB AaBb aaBB aaBb

ab AaBb Aabb aaBb aabb

AB          Ab          aB          ab

AB A-B-  A-B-  A-B-  A-B-

Ab A-B-  A-bb A-B-        A-bb

aB A-B-  A-B-  aaB- aaB-

ab A-B-  A-bb aaB- aabb

The genotypes of the form A– B–, A– bb and aa B– have triangular seed capsules (15 of 16), while the seed capsules of the aa bb genotypes are ovoid (1 of 16).

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