Question 13 (5 points) Listen Which statement about our understanding of epigenetics is false? Epigenetics is interested in gene activity. Epigenetic mechanisms are reversible. Epigenetics makes us unique. Epigenetic mechanisms alter our DNA. Question 14 (5 points) Listen Use your knowledge of Mendelian Inheritance to answer the following: Dimples is a dominant trait. Biomom has a heterozygous genotype, and biodad has a homozygous recessive genotype. What is biodad's phenotype? (D,d) Dimples No dimples (d,d) Question 15 (5 points) Listen When a single phenotypic trait is determined by more than just one gene, it is called a pleiotropic effect heterozygous inheritance homozygous inheritance polygenic inheritance Question 16 (5 points) Listen Freckles are a dominant trait. Linda is (F, f) for the trait, while her husband (Bob) is (F, F). What is Linda's phenotype? freckles heterozygous no freckles homozygous dominant Question 1 (5 points) Listen Freckles are a dominant trait. Linda is (F, f) for the trait, while her husband (Bob) is (F, F). What is Linda's genotype? no freckles homozygous dominant freckles heterozygous Question 2 (5 points) Listen Cleft chin is a dominant trait. Lois is homozygous recessive for the trait, while her husband (Clark) is heterozygous. What is the probability that they will have a child with a cleft chin? 0% 50% 25% 100% Question 3 (5 points) Listen If a child inherits alleles from bio mom and bio dad that are different for a particular trait, the child will not display the dominant trait. the child is homozygous for that trait. the child is heterozygous for that trait. the child is pleiotropic for that trait. Question 4 (5 points) Listen Males are more likely to experience X-linked disorders than females (and more severely so) because males' smaller Y chromosome (with its limited genetic material) can not compensate for "issues" or mutations that exist on their X chromosome. higher levels of prenatal testosterone serve as a risk factor for various disorders. epigenetic mechanisms attached to the Y chromosome result in "disordered" phenotypes. male newborns (especially when premature) are more likely to have neurological issues. Question 5 (5 points) Listen Use your knowledge of Mendelian Inheritance to answer the following: Dimples is a dominant trait. Biomom has a heterozygous genotype, and biodad has a homozygous recessive genotype. What is biomom's phenotype? (d,d) No dimples Dimples (D,d) Question 6 (5 points) Listen A parent who is athletic may not only pass his/her athletic prowess to offspring via genetic inheritance, but may also create a family environment for his/her children that emphasizes athletic activities and pursuits. In this case, we would describe the gene-environment effect for athleticism as reactive passive evocative active Question 7 (5 points) Listen One study found that boys who have a gene that produces lower levels of MAO-A (which has been associated with aggression) did indeed exhibit higher levels of aggression as adults, but only when they had experienced abuse during their childhood. This highlights the concept of gene-environment interaction evocative gene-environment effect passive gene-environment effect experience-dependent brain development Question 8 (5 points) Listen Genotypes are rodlike structures in the cell nucleus that transmit genetic information. always paired up in the same way across DNA ladder rungs. directly observable characteristics. a complex blend of genetic information that influence all of our unique characteristics. Question 9 (5 points) Listen A child is heterozygous for a particular trait if dominant-recessive inheritance occurs. both parents are homozygous dominant for that trait. both parents are homozygous recessive for that trait. the alleles from bio mom and bio dad are different. Question 10 (5 points) Listen Genetic disorders are always inherited. True False Question 11 (5 points) Listen Use your knowledge of Mendelian Inheritance to answer the following: Freckles is a dominant trait. Biomom has a homozygous dominant genotype, and biodad has a homozygous recessive genotype. What's the probability that they will have a child with freckles? 0% 25% 50% 75% 100% Question 12 (5 points) Listen Meiosis is important because it is responsible for the creation of all somatic cells. it allows for genetic variability and diversity in human characteristics. it ensures that all cells will be identical. it facilitates healing via growth of new bodily tissue.