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In sampling cells of a diploid plant species(2n=18) at random and measuring their DNA content, a geneticist obtained the following results. Explain what stage of meiosis each cell might represent. (ng=nanogram=10^-9 of a gram)
Cell 1= 1.2 ng DNA per cell nucleusCell 2= 0.6 ng DNA per cell nucleusCell 3= 2.4 ng DNA per cell nucleus
You made and viewed a capsule staining of K. pneumonia, and decide you do not want to keep the slide. Where would you place it once you have made your observation? Why?
Discuss how does the burning of a candle relate to biological processes and biology in general? Any help would be appreciated thank you.
What does hyptonic, hypertonic, and tonicity mean? What's the difference between these three words?
The diploid genome in a human somatic cell consists of approximately 6 billion base pairs. (a) If you connected all the chromosomes end-to-end, how long is the DNA in each cell based on the crystallographic dimensions of the DNA double helix.
Think about an experimental Drosophila population containing 5 males and 5 females (2N = 20) in a population. An autosomal locus (gene A) has allele A1 and A2 with frequencies 0.9 and 0.1
Which of the following scenarios would NOT result in natural selection?
When the widely prescribed painkiller Demerol is added to a suspension of respiring mitochondria, the ratios of NADH/NAD+ and Q/QH2 increase. Which electron-transport complex is inhibited by Demerol?
Apply the principle of exponential growth to the cells in a multicellular organism where a cancer arises in a lymph node. Assume the tumor cells double every 18 hours and none die. How many days will it take to become a palpable mass (approximatel..
How do cadherins, IgSF members, and selectins differ at the molecular level in the way they mediate cell-cell adhesion?
What would happen if one were to inject both the R strain and heat-killed S strains into a host organism such as the mouse.
How might species change their distributions as global temperatures continue to increase? What do you think will happen to species which live on the tops of mountains?
In a random mating population, we have identified leghorn chickens that have an autosomal recessive disorder that results in the hopping like a bunny.
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