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pochemuha
2 years ago
7

I need some ideas for experiments that show the process of evolution by natural selection. if this could be answered asap that w

ould be super helpful!!
Biology
1 answer:
Alex2 years ago
6 0
An example could be moths since certain moths in certain areas have a higher reproduction rate than others and have adapted camouflage to survive against predators
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The Meselson-Stahl experiment demonstrated which of the following about DNA replication? View Available Hint(s) The Meselson-Sta
anyanavicka [17]

Answer:

This experiment proved that DNA replicated semiconservatively; half the original polynucleotide is conserved in each of the two copies

Explanation:

Semi-conservative mode of replication means that the two strands of DNA unwind from each other, and each of themacts as a template for synthesis of a new, complementary strand. As a result, two formed DNA moleculesc ontain one original strand and one new strand.

Meselson and Stahl experiment showed this model by labeling the DNA of bacteria across generations using isotopes of nitrogen ( patterns of DNA labeling showed the mode of replication).

3 0
3 years ago
Read 2 more answers
How do scientists decide when to change or modify their understanding of a particular topic?​
Natali5045456 [20]

Answer:

they carry out experiments to understand it

Explanation:

Scientists raise hypotheses which are tested by experiments made under controlled conditions in order to explain a particular topic. When a hypothesis is confirmed by the experimental data, the evidence obtained from this experiment provides the basis to increase the scientific knowledge about a particular issue. In consequence, experimentation can be considered as a critical step in the scientific method and research aims to advance knowledge of a particular phenomenon by confirming a hypothesis, which must be testable (i.e. verifiable as a result of further experimentations).

6 0
3 years ago
Are the offspring of parents who are both homozygous dominant for normal red blood cells in danger of getting sickle-cell anemia
Ksju [112]

Answer:

If both parents do not have sickle-cell anemia, than the possibility is low.

Explanation:

If both parents have the sickle-cell trait, their offspring has a 25 percent chance of getting sickle cell anemia and a 50 percent risk of them having sickle cell trait. Meanwhile, there is also a 25 percent chance of the child not getting it at all.

If one parent has sickle cell anemia and the other has sickle cell trait, then their offspring with have a 50 percent chance of getting sickle cell anemia and a 50 percent chance of getting a sickle cell trait.

When both parents have sickle cell anemia, their child will definitely have it.  

7 0
3 years ago
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CELL STRUCTURE CROSSWORD <br> GRADE 7 BIOLOGY
Snezhnost [94]

Answer:

clearer pic ?

Explanation:

4 0
2 years ago
Chemical reactions are like an equation with :
alukav5142 [94]

Answer:

Reactants= Products

Explanation:

Reactants are what are required to start the reaction. Products are the ending result.

4 0
3 years ago
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