Phenotypes Study guides, Class notes & Summaries

BSC 1005 Final Exam - Questions and Answers Under the biological species concept, what criterion is used to assign populations of organisms to the same biological species? being able to interbreed and produce fertile offspring Speciation requires ______. genetic isolation The wing of a penguin is ______ the wing of a butterfly. analogous to Homology is evidence of ______. Common ancestry Feathers in birds appear to have first evolved for insulation but later conveyed a new advantage in helping ...

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...