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aleksandr82 [10.1K]
3 years ago
5

What explains the observation that a single eukaryotic protein coding gene can give rise to multiple different proteins, i.e., w

hy are there only ~25,000 human genes in the genome, but ~150,000 different proteins in the human "proteome?" choose the two best correct answers?
Biology
1 answer:
Radda [10]3 years ago
3 0
• Genes can contain more than one polyadenylation site, which alters the 3' of the mRNA transcript and the inclusion/exclusion of exons.
• mRNA transcripts from the same gene can be differentially spliced to include/exclude exons.
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Several fish species became extinct millions of years ago. The graphs provided below show the distribution of fossils of these f
cestrela7 [59]
1. Explain why the distribution of fossils in Figure 1 supports the hypothesis that the extinction of these species was the result of a sudden environmental change.
This hypothesis can be supported because all the fossils accumulate almost at the same age of the rock layer. That is, all the fossils died almost at the same time.

2. Describe an environmental change that could have produced this type of fossil distribution.
Good examples of sudden environmental changes are volcanoes. When a rash occurs, the whole environment suddenly changes for different reasons such as ash or lava, and all living things can die immediately or in a few years by the change in the ecosystem.

3. Explain why the distribution of fossils in Figure 2 supports the hypothesis that the extinction of these species was the result of a gradual environmental change.
This is because the fossils accumulate at different ages of the rock layer, that means, the species dying over time. The gradual descent of the fossils is observed.

4. Describe an environmental change that could produce this type of fossil distribution.
For example, if a climate change occurs - the temperature increases or decreases - it can cause the trees or plants to die and all the animals in the ecosystem also die when they have no food. But this process is sequential, so the change can take years, centuries or even millions of years.

I hope this can help you.
4 0
3 years ago
ANSWER THE FUCIN QUESTION!
RSB [31]

Answer:

Oxygen

Explanation:

It's air. why would it carry water

6 0
3 years ago
What is the last step of a scientific investigation?
aleksandr82 [10.1K]

Answer:

its c

Explanation:

communicating the result is significant to analyzing data

4 0
2 years ago
Read 2 more answers
Where is amyglada located in a brain ? How does it function ?​
Sedbober [7]

Short Answer: The amygdala is located in the brain and its functions are related to emotional learning.

Explanation

The amygdala is a brain structure located in the temporal lobe of the brain. Its functions are related to the emotional system of the brain, and memory. In addition, the amygdala has been shown to influence the emotional learning process. The amygdala is mainly responsible for the formation and storage of memories associated with emotional events, so external sensory stimuli reach the basolateral group of the amygdala, where associations are formed with memories of the stimulus (mainly related to fear).

7 0
3 years ago
If someone got sick with an intestinal infection from eating the yogurt, what type of antibiotics would you prescribe? Why?
garri49 [273]
Probiotics 

and why is down below
Probiotics:   <span> Probiotics are live microorganisms that may be able to help prevent and treat some illnesses. Promoting a healthy digestive tract and a healthy immune system are their most widely studied benefits at this time. These are also commonly known as friendly, good, or healthy bacteria.

That is why i would prescribe it
</span> 
5 0
3 years ago
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