Bio Final Part 3 Are U Scared Yet

Front 1

In humans, the haploid number equals:

Back 1

23

Front 2

How many chromosomes in a human gamete?

Back 2

one

Front 3

From an evolutionary perspective, behavior can be viewed best as:

Back 3

a trait that can satisfy the three conditions required for evolution by natural selection

Front 4

What is the explanation for modern human preference for fatty foods?

Back 4

Ancestral humans who preferred fatty foods were less likely to starve, leaving more offspring to the next generation.

Front 5

An animal will preferentially feed on the:

Back 5

prey that provides the most energy relative to effort

Front 6

Behaviors that are learned easily and by all individuals in a species are called

Back 6

prepared learning

Front 7

Assume that you carry an allele which causes you to help individuals who you aren't related to. This help increases their fitness and decreases yours. The frequency of the allele may still increase in the population:

Back 7

if individuals you help are likely to return the favor and help you at some point

Front 8

When scientists displace an adult female Belding's ground squirrel to a new group for an experiment, she still risks her life by alarm calling, although she is not saving any of her kin. Why does this behavior still persist now that it is harmful to her fitness?

Back 8

The squirrel is acting on instinct and still calls because she possesses no instincts suited to this evolutionarily novel situation.

Front 9

Kin selection theory would lead us to predict that:

Back 9

children in stepfamilies are injured more frequently than those living with their biological families

Front 10

Gestational diabetes is thought to be the consequence of:

Back 10

conflict between the mother and fetus with respect to use of nutrients and how much food the fetus should be given. It is explained by kin selection.

Front 11

The genetic contribution of an individual to subsequent generations through its own offspring and through its influence on the survival of other relatives

Back 11

inclusive fitness

Front 12

The basic definition of life is:

Back 12

ability to replicate and carry out metabolism

Front 13

In a set of classic experiments performed in early 1950's, Urey and Miller subjected an experimental system composes of H2, CH4, and NH3, to electrical sparks. A few days later, they found ___ in their system.

Back 13

amino acids

Front 14

What is the approx age of earth?

Back 14

4.6 billion years

Front 15

According to the biological species concept, species are natural populations of organisms that have the potential to interbreed and are ___ isolated from other such populations.

Back 15

reproductively

Front 16

In animals, it is believed that the most common mode of speciation is:

Back 16

allopatric

Front 17

Speciation without geographic isolation is called:

Back 17

sympatric speciation

Front 18

Two populations of organisms belong to the same biological species when they:

Back 18

encounter each other, mate and produce viable and fertile offspring under natural conditions

Front 19

The mass extinction that occurred on earth 65 million years ago was immediately followed by:

Back 19

the rapid divergence and radiation of modern mammals

Front 20

You are part of a paleontological expedition to Mongolia, and are given the job of sorting the newly discovered fossils into species. Which species concept will you use?

Back 20

Morphological

Front 21

Uplift and formation of a mountain range divides a freshwater snail species into two isolated populations. Erosion eventually lowers the mountain ranges and brings the two populations together again, but when they mate, the resulting hybrids all produce sterile young. This is an example of:

Back 21

allopatric speciation

Front 22

____ produces new species and _____ takes them away

Back 22

speciation and extinction

Front 23

The causes of background and mass extinction differ in that BE is a normal evolutionary process where species go extinct as a result of microevolutionary processes whereas ME result from external catastrophic factors such as volcanoes.

Back 23

TRUE

Front 24

The Cretaceous period ended with the impact of a meteor in Yucatan 65 million years ago.

Back 24

TRUE

Front 25

Polyploidy can NEVER lead to the development of instantaneous reproductive isolation.

Back 25

FALSE