Genetic Tool Kit

I'll continue with the same method of answering questions about a video, so that the complete process of development is understood. 

Genetic Tool Kit

• What do homeobox genes code for in animals?

They are the "master" control genes, and they produce the basic body parts in every single animal (wings, arms, legs, head)

• Why are homeobox (also called homeotic) genes called the master control genes, or master switches?

Homeobox genes are, apparently, common genes of every animal, and that can only be explained by saying that we all have a common ancestor.

• What other organisms besides fruit flies have homeobox genes?

Every animal must have homeobox genes, as its basic body parts are produced by those kind of genes.

• What did the experiment with fruit flies and mice show?

Their genes are the same, because they had a common ancestor, but in every single animal there are also other factors that make the gene to produce a specific kind of eye, arm or head.

• What does the presence of packages of information suggest about evolution?

That they have some homeobox genes that are the same, but the other external factors determine what they finally produce. All the evolution process started with a common ancestor, but afterwards factors like weather, food and environment determined which path one specific animal followed.

• How has evolution tinkered with genes of animals?

In evolution, there's always new combination of genes, that produce different species.

• What role has embryos played in the study of evolution?

In this stage it's easier to watch the specie in study during its development, as it's faster and also very notorious every single change that happens.