Hi, my name is Mathew and I like biology and other sciences.
Which of the following would be supported by Lamarck?a. Natural selection leads to changes in organisms over timeb. The strong arms of a gorilla are the result of its parents constantly climbing, lifting and fighting.c. Lack of resources led to the death of three of four fox cubs.d. The founder effect is when a few individuals in a population are separated from the original population.
What is the molecular formula for an alkane with 12 carbon atoms?
Briefly outline the history of our knowledge of the structure of DNA until the time of Watson and Crick. Which do you think were the principle contributions and developments?
What results would you expect if the Hershey and Chase experiment were conducted on tobacco mosaic virus?
Each nudeotide pair of a DNA double helix weighs about $1 \times 10^{-21} \mathrm{g}$. The human body contains approximately $0.5 \mathrm{g}$ of DNA. How many nucleotide pairs of DNA are in the human body? If you assume that all the DNA in human cells is in the B-DNA form, how far would the DNA reach if stretched end to end?
Find ????. (Enter an exact number as an integer, fraction, or decimal.)X ~ N(7, 2)???? =
Which of the following is the reason jams and dried meats often do not require refrigeration to prevent spoilage?a. low pHb. toxic alkaline chemicalsc. naturally occurring antibioticsd. low water activity
Contrast the life cycle of a plant such as Zea mays with an animal such as $C$. elegans.
Background information: Genetic drift is variation in therelative frequency of different genotypes, owing to the chancedisappearance of particular genes as individuals die or do notreproduce. Thus, an allele may not be passed down to the offspringin the same proportion that it occurs in the parental generationeven when there is no selection.Question: Cougars have roaming ranges of about 200 square milesin North America. Their populations in the wild are declining. Howdoes this relate to genetic drift and what might be somecontributing factors to the decline in cougar populations?
Which method is "hit and miss" - that is, does not add aspecific gene to a cell?A. protoplast fusionB. gene gunC. microinjectionD. electroporation
