BIOLOGY HOW LIFE WORKS (LL) W/ 2 TERM AC
3rd Edition
ISBN: 9781319533168
Author: Morris
Publisher: MAC HIGHER
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Chapter 17.3, Problem 12SAQ
Summary Introduction
Studies that conducted in fraternal and identical twins are referred as twin studies. The main goal of twin studies is to demonstrate the significance of genetic and environmental influences of
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BIOLOGY HOW LIFE WORKS (LL) W/ 2 TERM AC
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- Briefly describe how twin studies can reveal whether or not the appearance of a trait is strongly influenced by genetics.arrow_forwardWhat are the importance of pedigree build in genetic counselling? How do genetic counselors help families?arrow_forwardWhat is concordance? For a polygenic or multifactorial trait such as behavior, why are identical (monozygous) twins studied? What is the advantage of studying identical twins reared apart? What should be the concordance in identical twins raised apart if a trait is purely genetic with no environmental influence? What are some genetic conditions or chromosomal abnormalities that cause changes in behavior?For example, Huntington disease; Fragile X syndrome. What is schizophrenia and why is it considered multifactorial? What is autism? Major depression? Bipolar disorder? What is: the purpose of our immune system? Our first line of defense against infection? • What are some differences between our innate immune system, and our adaptive immune system? What is an antigen? An antibody? Which cells make antibodies? What is a memory B cell? How do vaccines work? Why must HLA be matched for a successful organ transplant? Why is it difficult to find a good match?arrow_forward
- Two genes can interact in which several ways to determine a single trait?arrow_forwardBriefly explain how genes affecting a polygenic characteristic are located with the use of QTL mapping.arrow_forwardAccording to Amar J. S. Klar, is there a such thing as “left handedness”? What is the preferred term? Describe how the genetics works, according to his hypothesis. What are the alleles, and which combinations of alleles make for which type of hand use?arrow_forward
- Briefly explain how the number of genes influencing a polygenic trait can be determined.arrow_forwardIn the context of genetic influence on individual differences, the degree of genetic influence typically a. increases from infancy through childhood, and then decreases from childhood through adulthood. b. decreases from infancy through adulthood. c. remains stable from infancy through adulthood. d. increases from infancy through adulthood.arrow_forwardWhat are phenocopies? give atleast 3 specific examplesarrow_forward
- A geneticist is studying memory recall and is trying to locate specific genes that have varying effects on a given phenotype (physical trait) in the study subjects. These locations of these genes are referred to as: Group of answer choices Genomic spatial identifications Epigenetic regulators Evocative response indicators Quantitative trait lociarrow_forwardWrite a short explanatory essay on the following statement: “Incases of genetically programmed phenotypic plasticity, naturalselection acts on the norm of reaction. Thus the norm of reactionas a whole—rather than any one phenotype—determines ifselection is positive or negative.”arrow_forwardWhat does codominance mean in genetics? Select one: O a. Both alleles are expressed only when they are homozygous O b. Each allele is both dominant and recessive O c. The alleles are neither dominant nor recessive O d. Both alleles make products that are expressed when present /quiz/attempt.php?attempt=1173673&cmid=3837312&page=13# MacBook Proarrow_forward
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