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 does the jagged line tell you?

Explanation:

Step1: Identify x - axis label

The x - axis is labeled "Minutes After Fertilization", so it shows the time elapsed since fertilization.

Step2: Analyze intervals

The jagged line before the first label (60 minutes) indicates that the time interval before 60 minutes is not the same as the 10 - minute intervals (e.g., from 60 - 70, 70 - 80 etc.) shown on the rest of the x - axis. The interval before 60 minutes likely represents a different time span or is a non - standard part of the data collection, while the other intervals are 10 minutes each.

Answer:

1. The x - axis shows the minutes after fertilization. The interval before the first label on the x - axis is different from the other intervals; the other intervals are 10 minutes each while the interval before 60 minutes is non - standard as indicated by the jagged line.