Matching (For questions #32 through#36 answer with one of the below terms): a) P
ID: 92548 • Letter: M
Question
Matching (For questions #32 through#36 answer with one of the below terms): a) Pleiotropy b) Sickle-cell anemia c) Codominance d) Melanin e) Continuous variation Skin color Red blood cells are deformed causing inefficient oxygen earring ability Wide-ranging effect of one gene Heterozygous for a trait, but both alleles are expressed Populations show a range of continuous differences (ex. Height) If you were to perform a testcross between an XX parent individual and an Xx parent individual what is the percent that you will see an xx offspring individual. a) 25% b) 50% c) 0% d) 100% Can two brown eyed parents have a blue eyed child? a) Yes b) No Irradiated food can help with: a) Limiting Spoilage b) Kill bacteria c) Remove toxins d) a and b e) all listed Cytokinesis is the division of the cytoplasm. a) True b) False This following essay question #41 is worth 5 points: What are the four stages of Mitosis in order? 1) 2) 3) 4) What is the number one exposure source of radiation a typical individual is exposed to?Explanation / Answer
Answer:32-D-Melanin
33-B-Sickle-cell anaemia
34-A-pleiotropy
35-C-Co-dominance
36-E-Continous variation
38.Yes,because Eye colour is determined by the parents eye colour and whether the parents genes are dominant gene or recessive genes.Brown and may be green are considered dominant,but even two browns can make a blue eyed baby ,because their are no 100% rules also called polygenic ,so you can only go by a percent.
39.D-both a and b
Food irradiation is a form of food processing that can extend shelf life and reduce spoilage.
Foods are exposed to radiation to kill insects ,moulds and microorganisms but irradiating food does not get rid of dangerous toxins that are already present in the food .
40.True
Cytokinesis is the physical process of cell division which divides the cytoplasm of a parentral cell into two daughter cells .
41.Part A-1.Prophase-It is a stage of mitosis when the chromatin condenses into two rod shaped structures called chromosomes in which the chromatin becomes visible.
2. Metaphase-Second stage of cell division ,the process that separates duplicated gene material carried in the nucleus of a parent cell into two identical daughter cells.During metaphase the cells chromosomes align themselves in the middle of the cell through a type of cellular "tug of war".
3. Anaphase-Third stage of cell division between metaphase and telophase ,during which the chromosomes move away from one another to opposite poles of the spindle.
4. Telophase-Final stage of mitosis .During this phase the sister chromatids reach opposite poles .The small nulcear vesicles in the cell begin to reform around the group of chromosomes at each end.
Part B-Radiation exposure is a measure of the ionization of the air due to ionizing radiations from photons,i.e. gamma rays ,x-rays.
Everything is naturally radioactive including soil,rock,water,air ,food,animals,plants.The verage dose of terrestial radiation is 2 mSv per year.
Cosmic radiation comes from the sun and outer space .The average dose from cosmic radiation is 0.4mSv per year.
The average dose of medical diagnosis is 0.6mSv per year.
Some people are exposed to radiations as a part of work from industries, leftovers from nuclear testing .The dose is very small about 0.01mSv per year.