Unit of selection

Adaptations in nature are not perfect, for various reasons. Give atleast one reason

True or False. The discussion of units of selection aims to find out which level natural selection directly acts on, and which ones it affects only incidentally.

Adaptations evolve because they increase the replication of genes. (T/F)

It refers to behaviour by an individual that increases the fitness of another individual while decreasing the fitness of the actor.

Group selection, in which selection produces adaptations for the benefit of groups of unrelated individuals, is thought to be a weak force.

What form of adaptation does this Papilio butterfly shows?

In biology, what is the basic level of organization?

A possible example of concept is bird feathers: although obviously valuable for flight, it has been suggested that they were originally an adaptation for insulation

Does natural selection ever favor groups, rather than individuals?

It produces a distortion in normal Mendelian segregation, so that chromosomes bearing this gene are over-represented in an organism's offspring.

When a lion hunt is successful, does the genus Felis benefits? (Y/N)

What form of adaptation does the stick insects shows?

What are the three theories have been put forward to explain the existence of adaptation?

Is perfect adaptation possible?

In organisms like humans, with separate germ and somatic cell lines, selection between cell lines is a strong force. (T/F)

A plant, for example, may be more likely to mutate to a new form with more branches than would a vertebrate because it is easier to produce that kind of change in the development of a plant. What type of constraint is this?