Question

an animal is easy to study in a lab if it has a short lifespan.
part 4 -- partner challenge: \pitch a research idea\
with your partner, design a mini - research question about juncos that scientists could test.
example: \do city juncos sing louder than mountain juncos to be heard over traffic?\
your research question:
does temperature influence the timing of breeding in the dark - eyed juncos?
what would you need to measure or observe?
why would this be important for understanding evolution?

Explanation:

To answer "What would you need to measure or observe?" for the research question "Does temperature influence the timing of breeding in the dark - eyed juncos?", we need to consider the variables related to the question. The independent variable is temperature, so we would measure temperature (e.g., using thermometers in different habitats or controlled laboratory set - ups). The dependent variable is the timing of breeding, which could be observed by noting the dates of nest - building, egg - laying, and hatching.

For "Why would this be important for understanding evolution?", if temperature influences breeding timing, it could lead to natural selection. For example, juncos that breed at the optimal temperature (due to genetic predispositions) may have higher reproductive success. Over time, this could lead to evolutionary changes in the population, such as adaptations to different temperature regimes.

Answer:

What would you need to measure or observe?

• Measure temperature (using thermometers in natural or controlled environments).
• Observe breeding - related behaviors (nest - building start date, egg - laying date, hatching date).

Why would this be important for understanding evolution?

• If temperature affects breeding timing, juncos with traits that allow breeding at the most favorable temperature (e.g., earlier or later breeding depending on temperature) may have more offspring.
• Over generations, this can lead to evolutionary changes (e.g., adaptation to local temperature patterns through natural selection).