Question

Fruit flies are commonly used in genetic investigations that focus on traits passed from parents to offspring over several generations. What can you infer is the reason fruit flies are the most commonly used organism for this type of investigation?

Answer 1

so there are several reasons behind it which includes ... the short life span ... more no. of progeny with clear and noticable characters ..
imp point
it shows linkage...

Answer 2

Answer:

Drosophila melanogaster or fruit flies are used as model organism for any genetic experiment. They have many features which make them model organisms, some of which are:

• Short lifespan: the development of an embryo into an adult fly takes around 10 days only. Hence, observations can be made in short period of time.
• High progeny number: it provides large number of offspring and thus provide enough number of observations required for any experiment.
• Short genome: it contains only 4 pairs of chromosomes. In addition, entire genome of the fruit fly has been sequenced in year 2000. So, it is easy to induce mutation or genetic manipulations required for any experiment.
• Anatomical features: fruit fly has various anatomical features which help in easy characterization. In addition, these characters such as eye color, wings etc  can be easily observed under a microscope.
• They also show similar behavior to humans such as sleeping, mating, eating etc. It helps in accessing the effects of genetics on human behavior.
• Culturing requirement: due to their small size they require minimal maintenance such as space, food, funding etc.