What is epistasis - Study guides, Class notes & Summaries

GENETICS FINAL EXAMS| GENETICS TEST BANK WITH FOUR DIFFERENT ACTUAL EXAMS AND 100% CORRECT ANSWERS| LATEST UPDATE 2024 SCORED A+ Genetics Exam 1 1. Beginning with a monohybrid cross of two true-breeding parents (AA X aa), what proportion of the F2 generation will be homozygous dominant? A. 1/8 B. 1/4 C. 1/3 D. 1/2 E. 100% 2. Beginning with a dihybrid cross of two true-breeding parents (AABB X aabb), you recover progeny in the F2 generation in the phenotypic ratio of 9:3:3:1. This ind...

USABO semi-final part A&B Questions and Answers 100% Correct. 1) The recent SARS virus is a: a) Lentivirus b) Coronavirus c) Egtved virus d) Baculovirus e) Retrovirus 2) Which of the following cell organelles is typically identified by its sedimentation coefficient? a) Golgi apparatus b) Mitochondria c) Nucleus d) Nucleolus e) Ribosome 3) Timber companies plant trees right after clear-cutting. Which of the following ecological and/or evolutionary processes would, in principle, take...

BIOL-1033 Exam 4 Questions and Answers Already Passed The human blood type AB, which displays both A and B antigens on red blood cells, is an instance of what genetic concept? - A) Incomplete dominance - B) Codominance - C) Dominant recessive - D) Epistasis - Explanation: Codominance What term describes a gene located on the X chromosome? - A) Autosomal gene - B) X-linked gene - C) Y-linked gene - D) Mitochondrial gene - Explanation: A gene on the X chromosome 2 If both...

Biology 102 Exam 2 WSU Carloye Latest Update 100% Solved Heterozygous When two different alleles combine to form a trait. Example: A tall person and a short person have a child who is short. The short allele is dominant so the child grew up to be short. Gene A section of DNA that controls a certain trait. Example: Eye color. Dominant Determines the expression of a trait (visually). Example: Brown eyes, dark hair. Homozygous A homozygous trait is when two of the same kind of all...

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...

ANSC 1401 Crossland Exam 3 Questions and Answers Already Passed DNA is located in the chromosome of the nucleus of the cell. True Gene Small section of DNA that codes for a specific purpose. Genome Sum of genetic material of an animal. Trait Observable characteristics Allele you receive one of these from each parent which can make a gene have various forms of genotypes and phenotypes. Mitosis somatic cell division Meiosis Development of germ cells, aka gametogenesis C...

A cross between true-breeding green and yellow plants (green pea color is dominant) results in ... plants with 1/4 green peas, 3/4 yellow peas plants with all yellow peas plants with 1/4 yellow peas, 3/4 green peas plants with all green peas - Answer-plants with all green peas A dihybrid cross (AaBb x AaBb) will result in what offspring ratio? 4:4:2:2 1:3:1 3:1 9:3:3:1 - Answer-9:3:3:1 A individual who has two of the same allele is said to be homozygous heteromologous homologous he...

Chapter 03 Extensions to Mendel’s Laws     
Multiple Choice Questions
  1.  Which of the following is not a phenotypic description of allele interactions affecting the expression of traits?  
A.  incomplete dominance 
B.  codominance 
C.  polymorphic 
D.  multifactorial 
E.  pleiotrophic   
Bloom's: 1. Remember
Learning Objective: 03.01.01 Categorize allele interactions as completely dominant, incompletely dominant, or codominant.
Section: 03.01
Topic...

Genetics Exam #2 With Questions and Answers 100% Solved What is the molecular mechanism for imprinting a gene? a. acetylation b. methylation c. phosphorylation d. mutation e. nitration - answerB Genomic imprinting most commonly uses____ to ____genes. Select one: a. acetylation : activate b. methylation : activate c. phosphorylation : activate d. methylation : deactivate e. phosphorylation : deactivate - answerD Individuals with three copies of most autosomes do not survive. Indivi...

name three factors affecting independence (and F2 ratios) Ans: -pleiotropy -epistasis -linkage What is pleiotropy? Ans: When 1 gene (locus) has more than 1 effect on an individuals phenotype (eg. W allele in cats causes both white fur and deafness) What is epistasis? Ans: a gene at one locus alters the phenotypic expression of a gene at a second locus (eg. W allele masks all other colour or pattern genes in cat coat when present) P Ans: frequency of the homo dominant (AA) genotype ...