Pleiotropy Study guides, Class notes & Summaries

A gene that affects the expression of a second gene is an example of __________________. a) pleiotropy b) codominance c) epistasis d) polygenic inheritance e) incomplete dominance correct answer: c) epistasis __________ is an example of a character that is controlled by more than one gene (a quantitative character) and demonstrates a continuum of phenotypes. a) Pleiotropy b) Polygenic inheritance c) Epistasis d) Codominance e) Incomplete dominance correct answer: b) Polygenic inhe...

TTU Biology 1402 Exam 2- Dr. Held Latest Update Already Passed Karyotyping (#chromosome) -To determine if the patient has an abnormal # of chromosomes - "A photographic inventory of an individual's chromosomes." - ordered display of chromosomes, doubled. Criss- Cross Inheritance Sons inherit their X chromosome from their mother Codominance -The heterozygote expresses both traits (alleles). -"A" and "B" genes make structures (not enzymes)= sugar types. -Ex) Blood types (A,B, ...

Honors Biology First Semester Final Exam with Complete Solutions What is the term for the process by which cells convert atmospheric nitrogen into a usable form for plants? Nitrogen Fixation What is the name of the small RNA molecules that regulate gene expression by targeting mRNA for degradation? MicroRNA (miRNA) What is the term for the process in which an organism produces offspring that are genetically identical to itself? Asexual Reproduction What is the name of the...

Detailed notes explaining the dominating theories of ageing: evolutionary (mutation accumulation, antagonistic pleiotropy) and mechanistic (damage versus maintenance, hyperfunction).

Evolution of the eye - ANSWER-1. Early chordates had light-sensitive eye-spots expressing photoreceptor genes 2. Light-sensitive regions bulge outward to the sides of the head 3. Patch folds inward into a cup, beneath unpigmented skin (lens placode) 4. Surface becomes transparent, and lens evolves ability to focus an image 5.Eyes become spherical and evolve greater acuity Constraints on adaptation - ANSWER-Laws of physics Existing genetic toolkit Pleiotropy (especially antagonistic ple...

UCI BIO 93 FINAL EXAM 2024 WITH 100% CORRECT ANSWERS What is an example of incomplete dominance? - correct answer A red and white snapdragon making a pink offspring What is an example of co-dominance? - correct answer Blood cells. What is Pleiotropy? - correct answer When a gene affects more than one phenotypic character. What is the norm of reaction? - correct answer The range of phenotypic possibilities What are some example of polygenic inheritance? - correct answer Skin col...

Which serum marker is best measured in MI? a) first 8 hours b) 8–24 hours c) 2–7 days a) troponin b) CK–MB C) LDH–1 What is pleiotropy? A single gene mutation can have various phenotypic outcomes. E.g. RB gene#: retinoblastoma and osteosarcoma Where in the kidney can you find epithelial cells with a brush border? proximal tubule: enhances reabsorption Which 2 substances are present in a genotype male in early fetal life? TDF: testes differentation factor –> induces test...

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...

A population was observed to increase from 5000 to 6000 individuals in one year, What is the rate of increase? - Rate of increase = 6000/5000 Advantages of reproducing later in life? - More resources available for Individuals An allele that is advantageous early in life but will be deleterious later in life will be SELECTED because of greater contribution of the early classes. TRUE OR FALSE? - TRUE Another Simple Case assumption? - The rate at which a population increases is a simple multip...

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...