BIO 240 Week 2 DQ 1

BIO 240 Week 2 DQ 1

BIO 240 Week 2 DQ 1

There is a fierce competition among individuals within any species, humans included, to gain access to reproductive privileges. The “fittest” – a term that signifies the largest, prettiest, and most sexually attractive members, succeed in predominantly mating and having offspring, while the less attractive ones often do not. What is the role of such sexual selection from an evolutionary standpoint?

Instead of engaging in fights over potential mates, what would be the problem of simply mating with family members, say, siblings and other relatives? Isn’t this a more efficient way to spread genes, without the added peril of having to find potential mates, which could be a dangerous, strenuous, and uncertain activity? Why not take that and “run?”


Write a 700- to 1,050-word paper summarizing the events of cellular respiration and photosynthesis and examine the relationship between the two.
Include the following in your paper:

– For photosynthesis, include a summary of the events in:

– The Light Dependent Reaction

– The Calvin Cycle (Light Independent Reaction)

– For cellular respiration, include a summary of the events in:

– Glycolysis

– Krebs Citric Acid Cycle

– The Electron Transport Chain

– Examine the relationship between photosynthesis and cellular respiration.

– Write the general formula for photosynthesis.

– Write the general formula for cellular respiration.

Explain the relationship between the two that should be obvious from the forensic scientists take advantage of genomic variations in noncoding regions of DNA
the techniques of polymerase chain reaction (PCR) and gel electrophoresis
Introduction: In recent years, law enforcement has been revolutionized by molecular biology. When human tissues are left behind at crime scenes, these tissues can be collected and processed to yield samples of DNA, which can then be treated to isolate specific DNA fragments that are highly variable in the human population.
Which band pattern among Lanes 3 to 6 seems to be the closest match to the band pattern in Lane 2, where the crime-scene DNA fragment was loaded? Which suspect appears to be the culprit?
What is the molecular weight (in base pairs) of the fragment in Lane 2 (DNA from the crime scene), Lane 3 (Suspect 1), Lane 4 (Suspect 2), Lane 5 (Suspect 3), and Lane 6 (Suspect 4)?
Part C
How does analyzing DNA profiles using the gel electrophoresis tool allow you to draw both qualitative and quantitative conclusions about the likely identity of the suspect in this case?
Judging by the sizes of the fragments you measured in Part C, about how many repeats of the 16-base-pair sequence would you expect to find in each of the suspect’s genomes?
In this lab activity, you targeted just one fragment of DNA to build the DNA profile of each suspect and the crime-scene sample. Real-world DNA profiles target multiple fragments.
What is the advantage of targeting more than one fragment and having each DNA profile feature multiple bands?