In this course, you completed five lab activities (sourdough starter, creating petri dishes, metabolism of yeast, DNA extraction, and yogurt making). Choose one of the lab activities and explain how you used the scientific method. Be sure to include important elements of the scientific method such as creating a hypothesis, collecting data, using an independent variable, using a control group, and using your results to draw conclusions. How has the lab you chose helped you understand the process of the scientific method? Your explanation needs to be at least five sentences. Other than the scientific method, this course has covered five units: Chemistry of Life, Cells, Cellular Metabolism, DNA, and Cell Division. Choose one of the five lab activities you completed in this course (sourdough starter, creating petri dishes, metabolism of yeast, DNA extraction, and yogurt making) and explain how that lab increased your understanding of one of the five units in this course. Your explanation needs to be at least five sentences. (5 points).

hello there the answer is d

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.