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Bond [772]
3 years ago
9

What are possible causes of cystic fibrosis?

Biology
1 answer:
Amanda [17]3 years ago
7 0

Answer:

2 and 3

Explanation:

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Please select the word from the list that best fits the definition Earthquakes produce ______ that travel though Earth
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Earthquakes produce __seismic waves____ that travel though Earth

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To correctly classify a rock as igneous, sedimentary, or metamorphic, what would a geologist need to know?
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C - How the rock is formed.
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1. Which of the following statements about telomeres is
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A plant that produces wrinkled, green seeds was mated to a plant that produces phenotypically round, yellow seeds. In the F1 gen
sergejj [24]

Answer:

Genotype of the parental plant that produced round, yellow seeds is RRgg

Explanation:

Let us say that allele for round shape (R) is dominant over allele for wrinkled shape(r)

and allele for green color (G) is dominant over allele for yellow color of seed.  

So a wrinkled green seed will have genotype either "rrGG" or "rrGg"

Like wise a round, yellow seeds will have genotype either "RRgg" or "Rrgg"

It is given that In the F1 generation, half of the plants produced round, yellow seeds and the other half produced round, green seeds.

So if a cross is carried between rrGg and RRgg, the following offspring will be produces

rG          rG         rg         rg

Rg RrGg RrGg Rrgg Rrgg

Rg RrGg RrGg Rrgg Rrgg

Rg RrGg RrGg Rrgg Rrgg

Rg RrGg RrGg Rrgg Rrgg

So genotype “RrGg” gives round and green seeds

And genotype “Rrgg” gives round and green seed

Thus, genotype of the parental plant that produced round, yellow seeds is RRgg

5 0
3 years ago
A star appears to be red in the night sky. Is the star traveling toward the earth or away from the earth? How do we know this? (
neonofarm [45]

<u>Answer:</u>

<em>The star is travelling away from the earth.</em>

<u>Explanation:</u>

<em>A star’s temperature largely determines its color. </em>Stars with higher temperature have a bluish color and stars with low temperature appear red in color.  But the color of star that we observe from the earth is different from its actual color.

<em>This variation in color is due to Doppler effect. </em>When the movement of  a star is towards the earth the frequency shifts to the higher frequency region and when the movement is away from the earth the frequency of the light emitted will shift to the lower frequency region. <em>Color of light depends on the frequency. </em>

The color corresponding to the <em>lower frequency region</em> is red and color corresponding to <em>high frequency region</em> is blue. <em>So when the star moves away from the earth it appears red in color.</em>

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