Evidence of epistasis from hybridization studies is more scarce.

Islands are known to differ in the food supply available to ground finches, mainly seeds.

To summarize, the particular song a male sings, and the behavioral responses of females to song and morphological signals, are not genetically inherited in a fixed manner but are determined by learning early in life.

Evidence of epistasis from hybridization studies is more scarce.

Plumage features constitute a major component of courtship signals.

The theory of founder effects does not explain how novel features like plumage traits arise.

The process of speciation is completed with the cessation of genetic exchange.

Almost nothing is known from hybridization studies about the inheritance of courtship behavior of females, or of their responsiveness to particular male signals.

Males transmit signals in courtship through behavioral displays.

Thus mating of females was strictly along the lines of paternal song.

Species can be recognized by their morphological characteristics and songs.

Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection.

We observe closely related species in sympatry and infer how they evolved from a common ancestor.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

The divergence of songs in the new population away from those in the progenitor population would only be prevented if these processes were balanced by repeated immigration and subsequent breeding: song flow.

Closely related species of birds are also chromosomally similar.

Exchange of breeding individuals between two populations tends to homogenize their gene pools.

The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted.

In school, I wasn't a very good student - I was very irresponsible and never did the studying but always liked to get the laugh.

The only person who is educated is the one who has learned how to learn and change.

The superhero is a really popular figure in the West. In Asia or Korea, the young viewers are amused by the figure, but it is not really so sensational.

In spite of everything that was done to me and my race, in spite of the adversity and the bitter moments, again we rise.

When old people speak it is not because of the sweetness of words in our mouths; it is because we see something which you do not see.

If it wasn't for the fans I would probably be bartending somewhere.

When I was paralysed by polio at 13, I went into an isolation hospital and couldn't sit up, so I only took liquid food from spouted cups which the masked nurses would bring in and feed to me. I saw my parents only through glass; we couldn't touch.

TV is like high school because you go into these series, and the people that work there have been doing it for seven years, like 'One Tree Hill,' so you are going into what is already a family - if you are accepted by that family, then it's fantastic fun.

Life is tough, but if you are stupid, it's a lot tougher.

I wasn't very good at school and couldn't get my head round it.

We don't know why we are here and the context of our role in the universe, and the thought of an infinite universe. It's something the human mind can't really grasp. It's statistically impossible that there's not life on other planets.

All the world is a laboratory to the inquiring mind.

It's that drama that drives authors, you know.

If Shaw and Einstein couldn't beat death, what chance have I got? Practically none.

It's never been confirmed that Elizabeth I was a virgin. It's like the Virgin Mary - it's about branding, a logo. To use a modern term, Elizabeth was actually a bit of a slut.

We act as though comfort and luxury were the chief requirements of life. All that we need to make us happy is something to be enthusiastic about.

All that I know I learned after I was thirty.

My message is that steroids is bad. Don't do them. It's a bad message.

Even the most jingoistic person would have to admit that even American cultural music comes from Europe. That's what classical music is, real European music.

'Nicholas Nickleby' was the best example, where 43 people could make an audience of 1,500 look at a fingernail at any given moment. It was so controlled, and yet it was a group of disparate individuals. It was a happy, constructive time, and it seemed to be an active discussion of what makes the theater work.

We must all hang together, or assuredly, we shall all hang separately.

Rajeev Gandhi was prime minister. We've had a long family relationship with them. He asked me to fight an election, and I went ahead and did it. But I was not qualified as a politician, and I am not going back there again.

Take steps each day to be sure your life expresses commitment to Jesus.

I'm really lucky that my record companies have been patient with me and leave me alone and give me the time to make it right in my mind.