Cell Biology

I am wishing for information on the cell wall. I have read much information from books and/or websites that has provided a plethora of information. Thus, I was wishing for a breakdown from an individual as I thought that it would provide a better understanding than a textbook definition. I understand that it considered protection for the cell, assists with the determinign and/or keeping the shape of the cell, assists in excessive water expansion within the cell, utilized as a protective layer for bacteria. It is composed of primarily are cellulose, hemicellulose and pectin.(from what I gather) That is about where I am at this point. But I have found that there is a primary and secondary... click for more

Describe the control of gene expression

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Describe the synthesis of a polypeptide chain and the control of gene expression.

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Describe the control of gene expression

Question 1: Describe the control of gene expression In the Andalusian fowl, the allele for black feathers (B) is incompletely dominant to that for white feathers (b) and the phenotype of the heterozygote is described as blue. The texture of the feathers is controlled by a second gene locus, silky feathers (f) being recessive to normal (F). c. What is a heterozygote? c. What phenotype results from Ff? Crosses were made among blue birds which are heterozygous at the silky locus. c. What phenotypic ratio would be expected for the offspring? (Show your working very clearly). Expected phenotype ratio: c. What does the term gene locus refer to? c. Describe what... click for more

Describe the control of gene expression

Describe the control of gene expression. See attached file for full problem description.