Biology

Homework 1. Due at 11:59 pm 9/18/2022All answers must be in complete sentences and typed (unless otherwise noted). You do not haveto type labels on figures or calculations – that information can be handwritten, but anyexplanation of a figure must be typed. Handwritten answers that should be typed will receive 0points.Do NOT include the questions …

Which technique would you use to determine the following? You can use each technique only once.
Not all techniques will be used. There may be multiple correct answers for a question. Read More »

Draw a labelled diagram of the formation of a chiasma by crossing over. 4 pages.

Describe, using 3 examples, how homologous structures provide evidence for evolution. 5 pages.

Explain how chemical energy for use in the cell is generated byelectron transport and chemiosmosis.

Explain the process of muscle contraction. 3 pages

Compare and contrast the processes of spermatogenesis and oogenesis. 3 pages

Up to one additional mark is available for the construction of youranswers to this question.

Outline the role of short tandem repeats in DNA profiling. [20 marks]

Suggest a way methylation may affect tumour cell genes. 2 pages.

Samples were taken from two colon cancer tumours (T1 and T2) and two normal colon samples (N1 and N2). A particular gene was implicated as a possible cause of cancer. The promoter of this gene was cloned (A–J). The data show the DNA methylation patterns from these samples. The numbers (32–269) represent different markers in …

DNA methylation has a critical role in gene regulation by affecting transcription. Read More »