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Red hair (R gene) and freckles (F gene) are controlled by two different genes that are tightly linked on chromosome 16. Red hair is recessive to brown hair, whereas having freckles is a dominant trait. Although people with red hair and freckles often have blue eyes, the eye color gene (E gene) is on chromosome 15 and thus sorts independently from the other two genes. Blue eyes are recessive to brown eyes. An individual with genotype RRffEE mates with an individual with genotype rrFFee.
1) What is the genotypic and phenotypic ratio of the offspring? Show your work with a Punnett Square.
2) One of these offspring grows up and marries a man who is rrffee. What is the phenotypic ratio of their offspring (i.e., the grandoffspring of the original parents)? Show your work with a Punnett Square.
3) Suppose all three genes are very tightly linked. What would the phenotypic ratio of the grandoffspring be under this scenario? Show your work using a Punnett Square.
q1. all living cells both prokaryotic and eukaryotic have the cell structures plasma membrane cytosol ribosomes and at
Prions are "infectious" proteins that will alter the structure of wild type proteins and turn them prionic. Explain the relationship between structure and function for the following molecules: - lipids - phospholipids
q1. the control center for body temperature regulation is in a region of the brain known as the hypothalamus. while the
what is meant by health promotion and why is it such a key element of programming for community health today? your
Non-peptide transmitters still contain a specific mRNA sequence that can be recognized by in situ hybridization assays. Under such a situations, it is assumed that the non-peptide transmitter has been translated.
q1. explain why it is essential that metabolism be regulated and indicate how it is regulated give examples. reply must
Which of these would increase transpirational pull: thicker film of water on surface of mesophyll cells, higher relative humidity in air around leaf, lower rate of water evaporation from surface of mesophyll cells, larger diameter of stomatal pore..
Determine which types of cells can we derive continuous cell lines? From which types of cells can we? Derive finite cell lines? From which types of cells do we derive mature differentiated cells?
Micelles, which are spheres of fatty acids or phospholipids, are limited to a diameter of roughly 20 nm. Vesicles are spheres composed of a phospholipid bilayer.
The investigators also noted that 35 of the men had withdrawn from the study at the third evaluation. Based on this information, calculate and interpret the incidence density rate of prostate cancer in this group.
You will take a culture of photosynthetic bacteria and bubble nitrogen gas through it to displace the dissolved in the solution. Why is it important to keep the bottle covered with foil while you do this?
Determine which components of the urine would be raised if a person were on a very low carbohydrate, weight-reducing diet? Explain the process involved?
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