Gene pool all - Study guides, Class notes & Summaries

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe t...

Natural Selection the process that results in adaptation of a population to the biotic and abiotic environments. Polygenic controlled by more than one pair of alleles located at different gene loci Directional Selection occurs when an extreme phenotype is favored and the distribution curve shifts in that direction. Example: resistance to antibiotics and pesticides Stabilizing Selection Occurs when an intermediate phenotype is favored. Individuals near the average are fav...

convergent evolution - unrelated or distantly related organisms evolve similar body forms, coloration, organs, and adaptations natural selection - the process whereby organisms better adapted to their environment tend to survive and produce more offspring (acts on individuals but populations evolve) Judeo- Christian perspective - The Creator: God made everything Linnaeus - Binomial nomenclature and nested classification system Cuvier - fossils in strata- catastrophism Hutton and Lyell - g...

what are two factors that contribute to phenotype? - Answer-genotype and environment species - Answer-individuals that are able to exchange genetic material gene pool - Answer-all alleles present in individuals of that species populations - Answer-interbreeding groups of organisms of the same species living in the same geographical area what are two main sources that lead to genetic variation? - Answer-mutation and recombination what can somatic mutations lead to? - Answer-cancer, disease ...

bio 1108 exam 1 (herrick) questions and answers 100% pass what are two factors that contribute to phenotype? - Correct Answer ️️ -genotype and environment species - Correct Answer ️️ -individuals that are able to exchange genetic material gene pool - Correct Answer ️️ -all alleles present in individuals of that species populations - Correct Answer ️️ -interbreeding groups of organisms of the same species living in the same geographical area what are two main sources that l...

HSC Biology Module 5 Reproduction Reproductive success The ability to produce fertile offspring that survive to reproductive maturity and produce offspring of their own. Biological fitness the measure of an individual's reproductive success. It is calculated as the average contribution to the gene pool made by a certain genotype within a population and the relative likelihood that these alleles will be represented in future generation. Sexual reproduction It involves the meet...

Binghamton Bio 114 exam 2; Questions & Answers…Grade A+ Genetic Drift Correct answer-the constant changing of allele frequencies (that percentage of all alleles any one, or more, allele occupies in a population) in a population over time, due to random mating. Random Mating Correct answer-has the effect of changing how frequently an allele is found in a population. GENETIC DRIFT IS RANDOM, ALWAYS DRIFTING UP AND DOWN bottlenecks Correct answer-where a gene pool is significantly re...

B - Answer Which of the following is incorrect regarding safety? A. Do not perform unauthorized experiments or procedures B. Food or drink is allowed in lab rooms C. Let TA know immediately about spills, fires, or other accidents D. In case of fire, evacuate the room or building E. Store all back packs and bags out of the way E - Answer Which of the following is INCORRECT regarding safety? A. Discard broken glass in the in designated glass trash boxes or bins. B. Use common se...

Gene pool all of the alleles of all the genes in a certain population Hardy-weinberg principle genotype frequencies in a large population do not change from generation to generation in the absence of evolutionary processes Claims of hardy-weinberg principle (1) if the frequencies of alleles a1 and a2 in a population are given by p and q, then the frequencies of genotypes a1a1, a1a2, a2a2 will be given by p^2, 2pq, and q^2 for generation after generation. (2) when alleles are transmitted via me...

A population with a novel adaptation has evolved that adaptation T or F Correct Answer-True polytomy Correct Answer-a graphical depiction of what type of relationship there is between groups Which phylogenetic group includes all descendants of a common ancestor and only the descendants of that ancestor? Correct Answer-monophyletic evolution Correct Answer-changes in relative frequencies of alleles in a population's gene pool over time allele frequency Correct Answer-the proportion o...