Genetics Worksheet Essay Example
Associate Program Material
Genetics Worksheet
Review the images below and answer the follow-up questions.
Questions:
1. According to the pedigree, is cystic fibrosis inherited as a dominant or as a recessive trait? Explain how you made your conclusion using evidence from the pedigree and the principles of genetics. The pedigree shows that cystic fibrosis is a recessive trait. This is shown by having one cystic fibrosis gene and having one non-cystic fibrosis gene. Now this can mean that you may be the carrier of the disease, but not actually have the disease. According to Mendel a trait may not show up in someone but still may be able to pass that trait on to the next generation.
2. What would a Punnett square that shows how the son in generation IV (marked with an A) inherited cystic fibrosis look like? The son in generation IV shows that he is homozygous recessive since the disease is recessive, because the parents do not have cystic fibrosis and for the son to inherit it they need to have it.
Questions:
1. According to the pedigree, is Huntington’s disease inherited as a dominant or as a recessive trait? Explain how you made your conclusion using evidence from the pedigree and the principles of genetics. Huntington’s disease is inherited as a dominant gene, because it is passed on with each generation.
2. What would a Punnett square that shows how the first daughter in generation II (marked with a B) did not inherit Huntington’s disease look like? Huntington’s disease shows that although the parent had it, it was a recessive gene in that parent, but according to Mandel although it does not show it does not mean that it cannot be passed on.
3. What is the role of chromosomes in the inheritance of genetic traits, such as cystic fibrosis and Huntington’s disease? The role of chromosomes in the inheritance of genetic traits such as cystic fibrosis and Huntington’s disease is to carry the genetic traits.
Genetics Worksheet
Review the images below and answer the follow-up questions.
Questions:
1. According to the pedigree, is cystic fibrosis inherited as a dominant or as a recessive trait? Explain how you made your conclusion using evidence from the pedigree and the principles of genetics. The pedigree shows that cystic fibrosis is a recessive trait. This is shown by having one cystic fibrosis gene and having one non-cystic fibrosis gene. Now this can mean that you may be the carrier of the disease, but not actually have the disease. According to Mendel a trait may not show up in someone but still may be able to pass that trait on to the next generation.
2. What would a Punnett square that shows how the son in generation IV (marked with an A) inherited cystic fibrosis look like? The son in generation IV shows that he is homozygous recessive since the disease is recessive, because the parents do not have cystic fibrosis and for the son to inherit it they need to have it.
Questions:
1. According to the pedigree, is Huntington’s disease inherited as a dominant or as a recessive trait? Explain how you made your conclusion using evidence from the pedigree and the principles of genetics. Huntington’s disease is inherited as a dominant gene, because it is passed on with each generation.
2. What would a Punnett square that shows how the first daughter in generation II (marked with a B) did not inherit Huntington’s disease look like? Huntington’s disease shows that although the parent had it, it was a recessive gene in that parent, but according to Mandel although it does not show it does not mean that it cannot be passed on.
3. What is the role of chromosomes in the inheritance of genetic traits, such as cystic fibrosis and Huntington’s disease? The role of chromosomes in the inheritance of genetic traits such as cystic fibrosis and Huntington’s disease is to carry the genetic traits.