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Q1. While hairless hamsters are mated with normal- haired hamsters, about 1/2 the offspring are hairless and one-half are normal. When hairless hamsters are crossed with each other, the ratio of hairless to normal-haired is 1:2. How do you account for the results of the first cross? How would you describe the unusual ratio obtained in the second cross?
Q2. A man and woman are both of normal pigmentation and have a one child out of three who is albino (without melanin pigmentation). Albinism is an autosomal (not sex-linked) recessive trait. What are the genotypes of albino's parents?
An allotetraploid plant with 2n = 30 is backcrossed to one of its progenitor species that has an n = 8. A sterile progeny is produced. How many chromosomes will this sterile individual possess
Over the long period of time that life has existed on Earth, there have been a number of important or significant innovations including (but not limited to) endosymbiosis to create mitochondria and chloroplasts.
Which enzyme of the Krebs (TCA) cycle is different from the others with respect to its location and where is it located.
Nocodazole reversibly inhibits microtubule polymerization, which is essential for formation of the mitotic spindle. By treating a population of mammalian cells with nocodazole for a time and then washing it out of the medium.
A woman who is a carrier for cystic fibrosis has children with a man that has cystic fibrosis. What F1 phenotypic and genotypic ratios are produced from this cross? Show your punnett square. (B) Diagram the F2 results. show punnett square.
Explain how epithelium is classified and discuss at least three functions of the tissue type.
Both members of a couple are carriers for a recessive disease allele. If the couple has four children, which of the following must be true?
There is much genetic evidence that humans arose evolutionarily from primates. Based on this fact, could this have happened if the primates reproduced asexually? Why or why not?
Consider the following two genotypes: AABB, aabb where A and B are dominant and a and b are recessive.
Think about the pathology of a cytokine storm, select possible strategies that would be likely to diminish the harmful effects of superantigen toxins.
Agarose gel electrophoresis was conducted on undifferentiated myogenin, differentiated myogenin, undifferentiated GAPDH, differentiated GAPDH, and a negative control ladder. The UV image of the products produced only the ladder. What could cause t..
now a days, scientific advances are being made at an astounding rate, and nowhere is this more evident than in our understanding of the biology of heredity. Using DNA as a starting point, do you believe there are limits to the knowledge people sho..
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