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Alja [10]
3 years ago
7

How do natural disasters affect the process of natural selection? 15 points!

Biology
1 answer:
AURORKA [14]3 years ago
7 0
It decreases the population of certain animals
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It is estimated that 5.9% of Americans have diabetes. Suppose a medical lab uses a test for diabetes that is 98% accurate for pe
vagabundo [1.1K]

Answer:

P (actually that randomly selected person has diabetes given as given by the lab) = 0.7725

Explanation:

A probability is a number, between 0 and 1, expressing the precise likelihood of an event happening.

Probability (person actually has diabetes) = 5.9%

P(lab test says that they have diabetes) = 0.0764

P (actually that randomly selected person has diabetes given as given by the lab) = 0.7725

Workings shown in the figure below.

3 0
3 years ago
The third layer of the eye, the (1) , receives light rays and images and passes them on to the (2) nerve.
stepladder [879]
1. The third layer of the eye is the Retina 2. The retina <span>receives light rays and images and passes them on to the Optic nerve.</span>
6 0
3 years ago
Read 2 more answers
HURRY IM BEING TIMED PLEASE!
NeTakaya

A gene transcription occurs when the RNA copy of a gene sequence is made.

<h3>What is gene?</h3>

Although your question is incomplete as the image is lacking but I will try to help you the much I can. Gene is a unit of inheritance found in the chromosomes.

A gene transcription occurs when the RNA copy of a gene sequence is made. The correct image can not be located as the image attachment is lacking.

Learn more about gene:brainly.com/question/787658

5 0
2 years ago
Regulatory proteins bind to _____. the operator the lactose-utilization genes the regulatory gene RNA polymerase transcription f
jarptica [38.1K]

Answer:

Regulatory gene

Explanation:

Transcription is one of the major processes that occurs during gene expression. It is the transfer of the genetic instructions in DNA to mRNA. A strand of mRNA is made using complementary base pairs.

However, there is need for gene expression to be regulated.

Gene regulation refers to the mechanism that acts to induce or repress the expression of a gene. These include structural & chemical changes to the genetic material, binding of proteins to specific DNA elements to regulate transcription. These proteins that influences transcription by binding to specific nucleotide sequences (DNA segments/gene) are referred to as REGULATORY PROTEINS and those involved in regulating transcription of genes are called TRANSCRIPTION FACTORS.

Regulatory proteins controls the rate and manner of gene expression by binding to specific genes, thus, making it easy or hard for RNA polymerase (enzyme that attaches to DNA to synthesize mRNA molecule) to bind to the promoter of that gene.

Transcription factors (regulatory proteins) that promote gene transcription are called ACTIVATORS while those that decrease are called REPRESSORS.

5 0
3 years ago
Describe two processes of weathering and two processes of erosion that are taking place in Sam's backyard.
nika2105 [10]

Answer and Explanation:

When viewing the image of Sam's backyard, we can see the occurrence of chemical and physical weathering. Physical weathering is caused by the impact of water on rocks, which promotes the breakdown of rock particles. The chemical weathering is also caused by the water that I contact with the rock react with its elements causing chemical reactions that modify the rock.

Regarding erosion, we can consider the erosion by gravity that is common in mountainous regions, like the one shown in the photo. This type of erosion promotes the loss of mass of the rock due to the detachment and rolling of rock particles, due to gravity. We can also notice the rain erosion, created by the impact of water on the rock that detaches the fragments and transports them to other places.

8 0
2 years ago
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