Case Study – A Sickeningly Sweet Baby Boy Part I Questions 1. What additional information would you want to know to understand Emma and Jacob’s panic? To understand the cause of the panic that was brought to Jacob and Emma, you would need to know more about the state of the baby. This article just describes that the boy was having difficulty feeding, and after seven days he stopped feeding. This isn’t a situation that brings upon panic right away, but for Emma and Jacob it did. The panic was partly because they had already had a child that died from unknown reasons in the first nine days of his life, and didn’t want to lose another. The state of the current baby, such as if it was premature, or if it was very sick looking and …show more content…
Part II Questions Pedigree charts are useful tools used by genetic counselors to look for the incidence of disease within multiple generation families. Each generation is shown on a separate row. 1. Label the pedigree chart below to explain the relationships and the disease incidence within this family. Be sure to include Emma, Jacob, Samuel, Matthew, Emma’s father, Emma’s mother, Emma’s aunts, Jacob’s mother, Jacob’s father, and Jacob’s aunt. Please see Pedigree sheet: Case Study: A Sickeningly Sweet Baby Boy 2. Indicate on your pedigree chart the individuals who are carriers by shading half of each circle or square. Please see Pedigree sheet: Case Study: A Sickeningly Sweet Baby Boy 3. Define the terms genotype, phenotype, homozygous and heterozygous. Genotype: The make-up of alleles for a particular trait in an organism. For example, if black was a recessive trait in chickens, coded for by b, and there was a black chicken, its genotype would be bb. Phenotype: The physical appearance of a trait in an organism. The phenotype of the above chicken is that it is black. A phenotype could be that a person has blue eyes, or curly hair. Homozygous: Refers to expressing the same alleles for a particular trait. If black was dominant for the above chicken, and the alleles were coded for by B, if it was homozygous, the chicken’s genotype would be BB. Heterozygous: Refers
Introduction: In this frog population, traits such as eye color, skin color, and the presence or absence of spots are coded for by DNA. The nitrogenous bases in a strand of DNA make up an organisms genotype. The physical expression of the genotype is the phenotype.
p2 + 2pq + q2 = 1 ; where ‘p2’ represents the homozygous dominant genotype, ‘2pq’ represents the heterozygous genotype, and ‘q2’ represents the homozygous recessive genotype
This semester, you will have the opportunity to construct a family genogram for informational purposes. You will develop a genogram, documenting information from both sides of your family (maternal and paternal) for 4 generations starting with yourself. The genogram may be hand drawn or you may use a computer drawn one. (You can download a basic program from www.genopro.com/free or from http://www.progenygenetics.com/students/ ) Your
Traits get passed down from one generation to the next through Meiosis (cell division), where each parent gives you one Gene for each trait.
4. Clear wing, Black eye, and Hairless (c, b, and h) are linked, recessive traits carried on
Suppose the feather color of a bird is controlled by two alleles, D and d. The D allele results in dark feathers, while the d allele results in lighter feathers.
2. How will the alleles for these traits assort into the gametes that each parent might produce? (Hint: For a reminder on how alleles sort independently into gametes, refer to the illustration in Part 2, Question 2, in the Student Guide.)
Origins of a family have meaning and history. By keeping track of family relations also known as a family tree it can allow us to keep records of the past. The Edwards family tree shows great record from the early 1700 's to the mid 1800 's. This family tree demonstrates when a person was baptized; when they got married; and when they passed away. The Edwards family chart show the different relations of marriages and fertility rate from today 's society. From the chart we can determine that the Edwards family show a different demography compared to todays society. This is because life expectancy was shorter; families were larger; and finally marriages were happening at a young age.
Evolution – a change in the number of times specific genes that codes for specific characteristics occur within an interbreeding population over a period of time.
Genetic diversity provides a species with its form and function. A species genotype refers to their genetic code; what their cells are going to be used for – hair cell, eye cell, muscle cell, etc. A species phonotype refers to the way in which that species gene will be expressed – blonde hair, blue eyes, large muscle tone; which significantly impacts the success of that individuals genes. Without genetic diversity among populations the gene pools would be very limited, which gives way to a rise in mutations and inevitably the end of a species. “Genes regulate body size, shape,
You are also provided with a heterozygous female, and a homozygous recessive male for a genetic cross. In this particular female, all the dominant alleles are on one chromosome, and the recessive counterparts are on the other homologous chromosome. Due to a chromosomal condition, in the female no recombination occurs between the M and N loci. Normal recombination occurs between the L and M loci. Diagram this cross, and show the genotypes and frequencies of all offspring expected from this cross.
The family that is being observed for this assignment is headed by a married couple who has been together for a little over 40th years. Cliff Barnes a 61 year old male is married to Amy Barnes 66 years old. Their immediate household composition includes Amy Barnes’s 44 year son from a previous relationship, her 22 year old grandson and the couple’s 15 year old adopted daughter. I have included the immediate family members in the attached genogram because they play a major role in the family dynamics.
Genes come in different varieties, called alleles. Somatic cells contain two alleles for every gene, with one allele provided by each parent of an organism. Genotype refers to the information contained in an organisms DNA, or genetic material. Its phenotype is the physical
Genes that are sexual reproduction that have an evolutionary advantage in nature. This can be inheritance gene drive that can be in one individual and can be spread in the offsprings.
Then determine the ratios in which each of the character traits is found and also what possible genotypes the parents might be.(stallsmith)