Polygenic - Study guides, Class notes & Summaries

NORTHWESTERN MICHIGAN COLLEGEBIO 268 FINAL EXAM 2024 What type of activation is lymphatic tissue by macrophages presenting antigens during a viral infection - correct answer Helper T-cells The juxtamedullary apparatus acts as a special vascular system called the countercurrent exchange. - correct answer False What type of birth control may prevent pregancey by manipulating the hormones and interfering with ovulation? - correct answer Hormonal method What pressure remains the same alo...

Simply-Inherited Traits Correct Answer: traits affected by only a few genes qualitative or categorical affected little by environment Quantitative Correct Answer: measured with numbers Polygenic Traits Correct Answer: Affected by many genes with no gene having an overriding influence. - EX: Growth rate, milk production, ribeye area Typically quantitative or continuous in expression. - Phenotypes are usually described by numbers Greatly influenced by environment Examples of Sim...

Gene Determination correct answer: the idea that our genes solely determine who we are example: Huntingdon's disease, and sickle cell anemia both depend on genes did do genes determine everything? correct answer: NO, - alcoholism is not determined by genes complex traits = ? correct answer: Mendelian trais - complex traits do not follow a simple mendelian pattern of inheritance Mendelian traits correct answer: characteristics that are influenced by alleles at only one g...

Qualitative traits Ans: controlled by one or a few loci; discrete phenotypes (eye colour, coat colour, seed colour, seed texture, blood type, colourblindness etc) Quantitative traits Ans: controlled by multiple loci (also called polygenic traits); continuous phenotypes (height, weight, racing speed, milk yield, temperature, intelligence, temperament, schizophrenia - threshold trait) --> the range is measured as variation --> many loci contributing to the phenotype P = G + E An...

Ecology Exam 2 Chapter 7 1. Different forms of a particular gene are known as a. chromosomes. b. alleles. c. polygenic. d. pleiotropic. Answer: b 2. A trait that is determined by multiple genes is referred to as a. polygenic. b. pleiotropic. c. homozygous. d. heterozygous. Answer: a 3.Chickens with the dominant allele at the frizzle gene produce curly feathers, have very high body temperature, and lay few eggs. This is an example of a. polygenic traits. b. pleiotropy. c. epista...

Biology Praxis Exam Study Questions And Answers 100% Verified Review A+ A researcher hypothesizes that lectures do not convey information as well as written passages in a textbook do. The researcher separates 48 college freshman volunteers into two groups of 24, with an equal number of males and females in each group. One group hears a passage repeated three times over a two‑minute period. The second group reads the same passage for two minutes. All test subjects are then asked to wri...

Pathophysiology Exam 1 Questions And Answers Graded A+ 2024. An ordered photographic display of a set of chromosomes from a single cell is a(n): A) metaphase spread. B) autosomal spread. C) karyotype. D) anaphase spread. - correct answer. c An error in which homologous chromosomes fail to separate during meiosis is termed: A) aneuploidy. B) nondisjunction. C) polyploidy. D) anaplasia. - correct answer. b A somatic cell that does not contain a multiple of 23...

Pathophysiology Exam 1 Questions and Answers An ordered photographic display of a set of chromosomes from a single cell is a(n): A) metaphase spread. B) autosomal spread. C) karyotype. D) anaphase spread. - Answer-c An error in which homologous chromosomes fail to separate during meiosis is termed: A) aneuploidy. B) nondisjunction. C) polyploidy. D) anaplasia. - Answer-b A somatic cell that does not contain a multiple of 23 chromosomes is called: A) an aneuploid cell. B) a euploid c...

NASM weight loss practice test 1-100% Correct! Insulin functions to have what effect on the liver? Select one: a. Insulin does not affect the liver. b. Decrease hepatic glucose output c. Increase hepatic glucose output d. Causes it to oxidize protein -Answer-b. Decrease hepatic glucose output Reaching recommended physical activity levels has been shown to reduce the risk of developing obesity by what percent when compared to inactive adults? Select one: a. 0.6 b. 0.4 c. 0.8 d. 0.2 -...

difference between Interspecific and intraspecific variationIntraspecific variation occurs within a species. Interspecific variation occurs between different species. What is the difference between discontinuous variation and continuous variation?continuous - no distinct categories, e.g. height, strongly influenced by environment, controlled by lots of genes (polygenic) discontinuous - distinct categories, e.g. earlobes attached/unattached, genetically determined (environment has lit...