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Ann [662]
2 years ago
11

Do not have structures surrounded by ____________.

Biology
1 answer:
Kay [80]2 years ago
6 0

Answer:

membranes or nuclei

Explanation:

;)

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it would be refute i hope this helps chu

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3 years ago
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Which statement describes the change that has occurred over time in Graph A?
Black_prince [1.1K]
Your answer is A hope this helps
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Mass extinctions have occurred five times in Earth's history. The Permian and Cretaceous extinctions removed a large percentage
d1i1m1o1n [39]

Answer:

A. Species that remained after the extinction were able to radiate, new adaptations arose, and these adaptations produced the diversity seen today.  

Explanation:

When species went extinct they also left niches that could be occupied by "new" species; new places to live, places to be filled in the food web and different relationships to be formed. The wide availability of resources made organisms to radiate leading to a "new" diversity of shapes, sizes, and lifestyles.  

B. Species that have gone extinct were able to re-evolve from the ancestors that survived the extinction.  If you are extinct you are gone forever.  

C. Species that remained after the extinction were unable to speciate. Therefore, the number of species on Earth today is lower than the number of species present just before either extinction. The fossil record proves that species have changed over time and the diversity has changed over the history of Earth.

D. Species that remained after the extinction represented all of the lineages that were present before the extinction event. Therefore, extinction did not change the diversity of lineages. Again, the fossil record is evidence that lineages have changed over the history of the Earth.

8 0
3 years ago
The insertion of how many nucleotides into a genetic sequence does less damage to the code than the insertion of other numbers o
user100 [1]

Answer:

The insertion of triplet code in the sequence will hamper less as compared to other number. This is so because in case triplet code is added into the sequence the protein produced can be functional due to silence mutation.

Silent mutation can be defined as the mutation that has no negative effect on the body of the individual. Two triplet codes for same protein is defined as silent mutation.

But in case of other number insertion mutation can take place which can be harmful for the body of individual.

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Which would least likely be a cause of natural selection?
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Overpopulation would be the least likely cause of natural selection. Adaptation, evolution and variation are all causes of natural selection.

Explanation:

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