Question

Which three of these will be used to monitor the variation of dogs in the longitudinal study? (Select three.)

a) Fur color
b) DNA analysis
c) Blood pressure
d) Exercise patterns

Answer 1

Fur color, DNA analysis, and blood pressure will be used to monitor the variation of dogs in the longitudinal study.

Step-by-step explanation:

The three factors that will be used to monitor the variation of dogs in the longitudinal study are:

1. Fur color: Labrador retrievers' fur color is controlled by two alleles, E and B. Different combinations of these alleles result in different fur colors such as yellow, black, and chocolate.
2. DNA analysis: By collecting and analyzing DNA from hair samples, scientists can understand the genetic basis of population-wide traits and determine the level of genetic diversity in the dog population.
3. Blood pressure: Bloodhounds, a specific dog breed, were bred to have a better sense of smell and have more olfactory bulbs and larger olfactory receptors. Monitoring their blood pressure can help assess their overall health and sense of smell.