Exam 3: Evolution by Natural Selection

A trait that confers a greater level of fitness,relative to those who lack it,is called a(n)________.

Occasional traits,such as the insect-capturing features of carnivorous plants,emerge because existing traits become used in novel ways.Such traits are known as ________.

Suppose you were a dog breeder who wished to reduce the incidence of barking in an otherwise popular breed of dog.Design a strategy that would allow you to do this.What assumptions would you need to make,and what key elements would need to be in place to be successful?

Evolution by natural selection was conceived and written about in the 1800s by ________.

Which of the following issues constitute a threat(s)to estimating the heritability of the Galapagos Island finches?

The accompanying figure shows data on composite values for beak size,beak shape,and body size for the medium ground finch (Geospiza fortis)inhabiting Daphne Major.Complete data sets were collected from 1973 onward. The figure shows that ________.

An attribute that increases an organism's fitness,as compared to individuals lacking it,is called a(n)________.

Natural selection ________.

Beginning around 1930,the ________ [two words] developed as a reformulation of Darwinian natural selection based on the ways in which knowledge in genetics has informed us about heredity.

________ can be defined as the fraction of the variation in a population that is due to differences in genes.