Phenotypes Study guides, Class notes & Summaries

How many modes of selection are there? correct answer: 3 What are the modes of selection? correct answer: Stabilizing selection, directional selection, and disruptive selection Stabilizing Selection correct answer: The mean of the trait remains similar over time but the standard deviation decreases Directional Selection correct answer: The mean phenotype shifts in a particular direction Disruptive Selection correct answer: The standard deviation of the trait increases as individ...

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...

TAMU bio 111 lab exam 2 review (2023/2024) already passed What is the difference between the coding and non-coding region? Coding region: comprised of genes that encode proteins (instructions that determine traits) and makes up 1-2% of human DNA. • Noncoding region: makes up 98-99% of human DNA, contains STRs and is responsible for regulatory functions such as gene transcription. What are STRs? Short-tandem repeats (STRs) are unique repeating patterns of the same nucleotide sequence. They can...

Simply-Inherited Traits Correct Answer: - traits affected by only a few genes - qualitative or categorical - rarely quantitative - typically not affected by the environment Polygenic Traits Correct Answer: - affected by many genes with no gene having an overriding influence - typically quantitative or continuous in expression - greatly influenced by the environment Threshold Traits Correct Answer: polygenic traits that have categorical phenotypes Which are more important? Corre...

Convergent vs Divergent Evolution - ANSWER -Divergent: one broad class but because of different features they diverge -Convergent: similar features between 2 different classes Punctuated Equilibrium vs Gradualism - ANSWER -Punctuated: concrete & defined phenotypes -Gradualism: phenotypes gradually evolve Speciation - ANSWER Formation of new species 1) Allopatric: separated by geographical barrier (mountain, ocean, river) -Barrier divides species 1 and species 2 2) Parapatric...

Which theory of human development was proposed by Jean Piaget - Cognitive Developmental theory Involves capacity to change - Plastic Development Occurs within families, schools, peer groups - Contextual Development Includes how body, mind, emotions, and relationships change and affect each other - Coconstructional Development Involves biological, cultural, and individual factors - Multidimensional Development Descriptive research - Gathering information by observing and recording behavior ...

Lifespan Development: A Psychological Perspective By Martha Lally and Suzanne Valentine-French This Open Education Resource (OER) textbook was funded by a grant from the College of Lake County Foundation and supported by the Business and Social Sciences Division. This textbook can be found at: Publication is under the following license: Creative Commons Attribution-Noncommercial-Share Alike 3.0 unported license to view a copy of this license, visit Table of Contents C...

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...

Biology 1406 lecture exam 4 latest update graded A+ gregor mendel father of modern genetics two things gregor mendel discussed character trait character heritable feature of an organism trait version of a character what did mendel follow? the inheritance of traits in true-breeding pea plants cross mating between traits ex: purple flower with a white flower hybrid offspring of a cross phenotype physical appearance ex: purple flower color genotype DNA content of ge...

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...