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3 years ago

6

What are two types of evidence that support the hypothesis that earth and the rest of the solar system was formed by a condensin

g nebula

1 answer:

weqwewe [10]3 years ago

7 0

Comets, Asteroids and metoeorites

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Which animal has a one-way digestive system?

Kobotan [32]

A. Earth worms
Because it can only flow one way

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3 years ago

When Mendel crossed two hybrid plants for stem height (Tt), what results did he always get?

Ivahew [28]

When you cross two hybrids, the results always come in a 3:1 ratio as follows:

3 is the inheritance of at least 1 dominant allele
1 is the inheritance of two recessive alleles

Punnet Squares are very useful!
<u>T t </u>
T | TT | Tt |
t |<u> Tt | tt </u>|

Three out of 4 boxes have offspring that express the dominant trait (tall plants) and 1 out of 4 boxes expresses only the recessive trait (short plants).

Hope this helps! :)

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4 years ago

What provides the energy that drives the water cycle?

Alenkinab [10]

The sun. The sun provides the energy for evaporation and even for the rest of the water cycle without the sun it wouldn't work. Unless you had a giant heat lamp over the ocean lol

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3 years ago

2. The allele for webbed hands (W) is dominant to normal hands (w). Complete a Punnett square

Anna11 [10]

A. both parent would be Ww
b. see picture (for the top left it would be Ww not wW)
c. 2 Ww, 1 WW, 3 ww (i think i’m not sure how to do ratio)
d. 75%?
e. 25%

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