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Q1. Sketch a diagram of a gene. Draw a diagram of a piece of DNA. Transcribe the gene into mRNA and then translate it into a polypeptide. Must have at least 4 amino acids in the polypeptide. Points deducted for not having start or stop codons and the amino acid associated with the start codon.
Q2. Evaluate and contrast the major muscle groups of the upper and lower limbs and relate their similarities and differences to their function.
Q3. The plasma membrane not only provides a protective barrier for the cell but also determines which substance enters or exits the cell. We call this characteristic a what?
Oceans receive materials from land primarily as runoff from rivers. Which of the statements is true regarding the materials and nutrients found in the oceans? Most elements that enter the oceans from other compartments remain suspended in the water.
It is frequently when the environment changes in some way that is unfavourable to an existing population that the organisms begin to reproduce sexually. Explain the importance of this switch from asexual to sexual reproduction.
A nearsighted woman (Nn) with hazel eyes (Hh) marries the man with normal vision and hazel eyes (Hh). Their three children all have blue eyes and normal vision. What is the possibility that their next child will have blue eyes and be nearsight.
How would you answer to a person who argued that there is nothing to worry about because natural systems, through natural succession, will heal the wounds of human activities and restore the balance of nature.
The tRNA in the E site will leave and migrate to its aminoacyl-tRNA synthetase d. where the tRNA will be recharged with the correct amino acid.
Approximate the broad-sense heritability for seed number in this population. In a natural population of out breeding plants, the variation of the total number of seeds per plant is 16.
sketch the chromosomes of the parents and the F1. analyse interference and say what you think of its significance.
When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across plasma membrane and various channel proteins close. What are these channels known as.
What must a biologist do if she or he finds that different methods of analyzing the same data give different estimates of the relationships among certain taxa.
What characteristic of the synthetases explains this discrepancy. Tina is consuming 15 mg of iron per day. Her RDA is 18 mg. She has no condition warranting a greater-than-normal need for iron. Which of the statements is true about her consumption of..
In some cases the first gene in the linear sequence appears to be transcribed at a much higher rate than the second and subsequent genes (as in many but not all mRNAs contain the sequences encoded by gene 2 and beyond).
What is the possibility that - if they have a daughter - the daughter will be red-green colorblind. How several are born of each genotype.
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