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Svetradugi [14.3K]
2 years ago
15

n the CRISPR system of bacteria, the spacer is a(n): A. bacterial gene B. bacterial enzyme C. piece of phage DNA D. inactive vir

al RNA E. cascade protein
Biology
1 answer:
Volgvan2 years ago
6 0

Answer:

Option D

Explanation:

Bits of DNA that are interspersed among these repeated sequences are called spacers. Regarding to bacteria, the spacers are taken from viruses that previously attacked the organism. They serve as a bank of memories, which enables bacteria to recognize the viruses and fight against future attacks.

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Adaptive radiation occurs when a population colonize a new environment that has a variety of different habits and FEIL competito
CaHeK987 [17]

Answer:

True (although question is not clear enough)

Explanation:

Adaptive radiation occurs when <u>organisms evolve from the same ancestor. This process takes place as a result of environmental changes or when they are introduced to or colonize a new environment.</u> These changes become challenges that force these individuals to adapt to these new conditions.

Therefore, <u>this results into a faster evolution that creates different new forms</u> that possess a diversity of variations adapted to their new feeding habits, environment, and behavioral needs.

<em>One of the most famous examples of adaptive radiation is the formation of new forms of Galapagos finches.</em> These striking finches, which arose from a common ancestor, evolved different beak sizes and shapes that were especially adapted to different types of food. As different as they may appear, they are closely related!

5 0
2 years ago
Radioactive isotopes are use to determinate the [blank) age of rocks
Otrada [13]
Do you have snap because I want new friends
5 0
3 years ago
Can you list more than four traits that are inherited in plants?​
kari74 [83]

Answer:

flower color, flower position, seed color, seed shape, seed pod shape, pod color, leaf pattern, and stem length.

Explanation:

Some common inherited characteristics

3 0
3 years ago
In what ways are the features of a plant living in water different from a plant living on land ?
lesya692 [45]

Answer:

Earth, both on land and in water. Wherever they

live, plants provide food and oxygen to the

creatures that live nearby – including humans!

In this activity we will examine both a

terrestrial (land) plant and an aquatic (water)

plant. They have many things in common, but the

ways they get air, food and water change along

with the environments in which they live.

Explanation:

7 0
3 years ago
10 pc
ra1l [238]

Answer:

Students who take a PE class and who will be eating sugary snacks before PE.

Explanation:

The control variable (or control group) is an experimental element which is constant or unchanged throughout the course of the experiment.

The option "students who take PE class and who will be eating sugary snacks before PE" will remain unchanged and constant because the whole point of the experiment is to see the effects on students performance in PE after eating sugary snacks.

Hope this helps :)

7 0
3 years ago
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