Question

data analysis 13 the rise and fall of cyclins
goal
interpret data related to cyclin levels during the cell cycle.
skills focus
interpret graphs, predict
build connections
because of the universal nature of the genetic code, many of the same processes that occur in simple organisms are also found in more complex ones. this idea is referred to as conservation.
cyclins are a family of proteins that regulate the timing of the cell cycle in eukaryotes. research has shown that cyclins play an important role in the cells of the simplest eukaryotes, such as yeasts, and the most complex, such as humans. cyclins are made and destroyed throughout the cell cycle. to explore how the cyclin level changes during mitosis scientists measured the cylin level in the dividing cells of clam eggs. the data are shown in the graph.
cyclin levels in fertilized clam eggs
analyze and conclude

1. interpret graphs what does the x - axis on the graph show? how does the interval before the first label on the x - axis compare to the other intervals? hint: what the jagged line tell you?

1 the x - axis shows minutes after fertilization
2 this interval represents 10 minutes, but all intervals represent 60 minutes.

Explanation:

1. The x - axis of the graph is clearly labeled "Minutes After Fertilization", which indicates the time elapsed since fertilization.
2. By observing the intervals on the x - axis, we can see that the first interval before the first label (from 60 to 70) represents 10 minutes, while the other intervals (e.g., from 70 - 80, 80 - 90 etc.) also represent 10 minutes each. The jagged line is a break in the axis to skip over some non - relevant time range.

Answer:

1. The x - axis shows minutes after fertilization.
2. The first interval and all other intervals represent 10 minutes each.