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Brums [2.3K]
4 years ago
9

What did darwin mean when he stated "descent with modification"? darwin was referring to change in species over time. darwin was

referring to how offspring resembled the parents. darwin was referring to the process of natural selection?
Biology
1 answer:
hoa [83]4 years ago
3 0
Process of natural selection
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What is the name of the system for blood travel in the human body?
andreyandreev [35.5K]
Circulatory system.....circulates blood (a vital delivery system of oxygen) throughout the whole body when tissues need it the most and with a constant supply.
4 0
4 years ago
Can someone explain anticondons?<br><br>Don't answer right away, got to add pictures.
Greeley [361]

Answer: A codon is found on the coding strand of double-stranded DNA and in the (single-stranded) mRNA. ... The anticodon is found on the tRNA and is the part that base-pairs with the codon (on the mRNA) in order to bring the appropriate amino acid to the ribosome to be added to the growing peptide chain.

7 0
3 years ago
Select the correct answer from each drop-down menu.
Natalija [7]

Answer:

The first blank is "<u>Food Service workers</u>" The Second blank is "<u>Housekeeping Staff</u>".

Explanation:

House keepers sanitize the room and surfaces for the next guest, and food service workers have guidelines they must follow to insure every customers safety.

5 0
3 years ago
Why are differences and similarities in DNA and proteins evidence of evolution?
olga55 [171]

Answer:

Homologous structures provide evidence for common ancestry analogous structures show that similar selective pressures can produce similar adaptations beneficial features Similarities and differences among biological molecules in the DNA sequence of genes can be used to determine species relatedness

6 0
3 years ago
In the plaque assay for bacteriophages, A. only temperate phages may be used. B. the plaque is an opaque area caused by a high c
arsen [322]

Answer:

The correct answer is C. In the plaque assay for bacteriophages, the plaque is a clear zone caused by a zone of lysis.

Explanation:

The plaque assay is an approach used for titering bacteriophage stocks or determining the quantity of infectious virus in a sample. Plaques are visualized if you spot the phage on a lawn of growing compatible bacteria. Each plaque indicates an initial infection with one phage followed by lysis of neighboring bacteria in the lawn. Only viruses that cause visible damage of cells can be assayed in this way. The plaque assay is used to determine viral titer as plaque-forming units per ml so that known amounts of virus can be used to infect cells during subsequent work.

In the plaque assay for bacteriophages, the plaque is a clear zone caused by a zone of lysis.

8 0
3 years ago
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