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Name: 21) Morgan's fruit fly work showed that genes are made of DNA True Fal
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Description: 21) Morgan's fruit fly work showed that genes are made of DNA True False22) Some genes can respond to environmental influences, and even change the expression of a trait as a resultTrue or false

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Biology

21) Morgan's fruit fly work showed that genes are made of DNA True False 22) Some genes can respond to environmental influences, and even change the expression of a trait as a result True or false

Nutrition Now

8th Edition

ISBN:9781337415408

Author:Brown

Publisher:Brown

Chapter26: Nutrient–gene Interactions In Health And Disease

Section: Chapter Questions

Problem 12RQ

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Which of the following is the definition of the term named Genes? a.Refers to genes that have identical alleles b.Genetic constitution of an organism c.Alternative form of a gene d.Trait expressed in the F1 generation e.Fundamental physical and functional unit of heredity f.Physical expression of traits of an organism
Gene mapping is often used to predict genetic traits that can be passed on, but what exactly does it map? A. Genes on a chromosome B.Genes in the brain C. Genes in the cell D. Genes in the nucleus
AaBbCc x AaBbcc How would you characterize this kind of relationship between the genes: A-B- (gray); A-bb (yellow); aaB- (black); aabb (cream) The CC and Cc genotypes allow color according to the expression of the A and B alleles. However, the cc genotype results in albino rats regardless of the A and B alleles present
How can you envision using this new information? Discuss how things that we do to our bodies (smoking, recreational drugs, employment environments, stress levels, eating/drinking habits, etc.) can influence genetic expression in our future child(ren).
8)Gene is a)The genetic composition that underlies a trait (or traits) b)DNA that controls when and where proteins are synthesized c)DNA of no known function d)DNA that provides instructions for building a protein e)DNA that provides the instructions for synthesizing various types of small RNA molecules f)An observable trait (or traits) of an organism
How can mutations cause changes to the traits? Explain using the following steps:1- DNA 2- Gene 3- Protein 4- Traits We need one explanation for the normal side and one for the mutation side. Can you explain in a few sentences how the change in the structure of the gene affects the function of the corn plant?
20. Traits that are governed by two or more genes are known as:
How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different? a) The cells have different combinations of alleles. b) The cells synthesize different proteins. c) The cells have differences in their genomes. d) All of the above
Which of the following statements describes an example of a phenocopy? Explain your reasoning. a. Phenylketonuria results from a recessive mutation that causes light skin as well as intellectual disability. b. Human height is influenced by genes at many different loci. c. Dwarf plants and mottled leaves in tomatoes are caused by separate genes that are linked. d. Vestigial wings in Drosophila are produced by a recessive mutation. This trait is also produced by high temperature during development. e. Intelligence in humans is influenced by both genetic and environmental factors.
You are a studying the genetic basis of horn color in unicorns. Gene C determines the color of pigment destined for the horn by converting a pink precursor into a purple pigment. C- individuals make purple pigment whereas cc individuals accumulate pink precursor. Gene D ensures the deposition of the pigment into the horn cells, such that D- individuals have a colored horn (purple or pink), whereas dd individuals have a white horn. You breed two purple horned unicorns to each other (CcDd). Assuming Gene C and Gene D are unlinked, what is the probability that the baby unicorn has a purple horn? Please express your answer to 2 decimal places (e.g. 0.69).
Gene dosage is important for a number of genetic phenomenon. Name two and explain their relationship to the genotype and phenotype observed.
1. A single nucleotide polymorphism (SNP) is a type of variation in the sequence of DNA that causes changes in an organism’s phenotype. a. True b. False 2. An allele is: a. a variant form of a gene at a particular location on a chromosome b. a segment of DNA c. a variant form of mRNA d. three nucleotides in mRNA that codes for one amino acid