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Lelechka [254]
3 years ago
7

PLSSS HELP ASAP IF YOU TURLY KNOW THISSS

Biology
1 answer:
Margarita [4]3 years ago
7 0

Answer:

<h2>C. To date rock layers</h2>

Explanation:

<em>They can help determine the relative age of rock layers</em>.

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How can I use the phrase "chemical pollution" in a sentence?
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The use of cars can cause chemical pollution by the release of carbon in the air.
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3 years ago
Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered p
Rom4ik [11]

Answer:

genes for flower color and edge shape are linked. They do not assort independently.

Explanation:

<u>Available data:</u>

  • test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.
  • serrated leaves → dominant trait
  • smooth edges → recessive trait
  • purple color → dominant trait
  • white color → recessive trait
  • F1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.

There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.

To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent

 

5 0
3 years ago
If more than one organism is in the same niche, what might happen?
stiks02 [169]

The competitive exclusion principle states that two species cannot occupy the same niche. When two species compete for the same habitat and resources, the end result is that one species eliminates the other.

4 0
3 years ago
Which statement best represents how structure relates to function? a. Some insects live longer than others. b. Many tropical bir
Harlamova29_29 [7]
If we are not there we will be done by then I can go to the movies with him tomorrow and I can do a
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3 years ago
Read 2 more answers
A hiker crosses topography near the sea that has low elevation and low relief and then climbs up steeply to reach a
gladu [14]

Answer:

mountain and coastal plains

Explanation:

i think it would be coastal plains because the area with low elevation is near the sea. only one answer has coastal plains in it, so use process of elimination. additionally, mountain makes sense since theyre usually steep and end in a peak.

7 0
3 years ago
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