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Wittaler [7]
2 years ago
5

20 POINTS! Why is it important to use a controlled experiment?

Biology
2 answers:
Otrada [13]2 years ago
8 0

B. So you can be certain of the link between the variables
that’s the answer
gregori [183]2 years ago
3 0
Answer is B !!!

you have to know what youre doing
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Condensation of water droplets causes the formation of
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2 years ago
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The mass of Venus is 4.87 × 1024 kilograms, and the mass of Jupiter is 1,898 × 1024 kilograms. the mass of jupiter is how many t
agasfer [191]

Answer;

0.39 times the mass of Venus


The mass of Jupiter is 0.39 times the mass of Venus


Explanation;

Important facts;

-Jupiter is 11.8 times bigger than Venus.

-Almost 1400 planets the size of Venus could fit inside Jupiter.

-Venus is the second closest planet to orbit the Sun


The mass of Venus is 4.87 × 1024 kilograms

The mass of Jupiter is 1,898 × 1024 kilograms


Hence; The mass of Venus/ The mass of Jupiter

4.87 × 1024 kilograms/1,898 × 1024 kilograms

= 0.39


Therefore; The mass of Jupiter is 0.39 times the mass of Venus

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Given the parents AABBCc × AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the pro
Anit [1.1K]

Answer:

3/4

Explanation:

If we assume simple dominance and independent assortment for each trait, we can use Mendel's Law of Segregation to predict the phenotypic proportions in the offspring of the parental cross AABBCc x AabbCc.

<h3><u>Gene A</u></h3>

AA x Aa

  • F1 genotypes: 1/2 AA, 1/2 Aa
  • F1 phenotypes: all A
<h3 /><h3><u>Gene B</u></h3>

BB x bb

  • F1 genotypes: 1 Bb
  • F1 phenotypes: all B
<h3 /><h3><u>Gene C</u></h3>

Cc x Cc

  • F1 genotypes:  1/4 CC, 2/4 Cc, 1/4 cc
  • F1 phenotypes: 3/4 C, 1/4 cc

We want to know the proportion of progeny with all dominant phenotype (A_B_C_). Since the genes are independent, we can multiply the probabilities of each gene to obtain the overall probability of having a ABC progeny:

<h3>1 A_ x 1 B_ x 3/4 C_ = 3/4 A_B_C_</h3>
6 0
3 years ago
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