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ankoles [38]
3 years ago
6

*

Biology
2 answers:
Kobotan [32]3 years ago
6 0
2 making RNA using DNA
defon3 years ago
5 0

Answer:

2

Explanation:

DNA splits to make RNA

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If your body gets too cold, sensory neurons detect the change and send a message to your liver.
Sergeeva-Olga [200]

Answer:

False

Explanation:

Sensory neurons send messages to the central nervous system.

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2 years ago
Explain how the law of entropy (second law of thermodynamics) applies in explaining the 10% rule in energy transfer in a food we
8_murik_8 [283]

Energy is always lost as energy is moved from one level to another. ... The loss of energy due to the second law of thermodynamics results in a pyramid with a large base and a 10% ratio between levels.

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3 years ago
What ways can help a Giant Panda from going extinct?
steposvetlana [31]

Answer: Use less paper

Explanation:

Giant pandas live on bamboo, which is scarce because bamboo trees are being cut down to make paper, which is destroying their natural habitat and only food source. By not using fewer paper products, you are helping to protect pandas from extinction.

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What does nucles do as a function in a cell?
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4 0
3 years ago
When pink sweet peas were self-pollinated and the seeds were collected and sown, the following flower colors were obtained: Red
Pavlova-9 [17]

Answer:

c. 1:2:1

The results are consistent with incomplete dominance for this trait, with pink flowers being heterozygous.

Explanation:

If flower color were determined by a gene showing incomplete dominance, the possible genotypes and phenotypes are as follows:

  • RR- red
  • ww - white
  • Rw - pink

If pink sweet peas are self-pollinated, then a cross between two heterozygous individuals is done (Rw x Rw).

<u>From this cross the expected ratios are:</u>

  • 1/4 RR (red)
  • 2/4 Rw (pink)
  • 1/4 ww (white)

So the null hypothesis is that the observed results exhibit a 1:2:1 ratio.

<h3><u>Chi square test</u></h3>

X^{2} = \sum \frac{(Observed - Expected)^2}{Expected}

<u>The observed frequencies were:</u>

  • 34 Red
  • 76 Pink
  • 40 White

Total 150

<u>The expected frequencies for our null hypothesis are:</u>

  • 1/4 x 150 = 37.5 Red
  • 2/4 x 150 = 75 Pink
  • 1/4 x 150 = 37.5 white

X^{2} = \frac{(34- 37.5)^2}{37.5} + \frac{(76- 75)^2}{75} + \frac{(40- 37.5)^2}{37.5}

X^2=0.5067

The degrees of freedom (DF) are calculated as number of phenotypes - 1; in this case DF = 3-1 = 2.

If we look at the Chi square table, for 2 DF and a probability of p0.05, the critical value is 5.991

Our X^2 value of 0.5067 is less than the critical value, so we do not reject the null hypothesis. The results are consistent with incomplete dominance for this trait, with pink flowers being heterozygous.

8 0
3 years ago
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