When comparing the birth patterns of humans and non-human primate, Rosenberg and Trevathan discovered some very clear differences:
1. The human period of labour and child birth is exceptionally long and painful compared to other non-human primates.
E.g. a human labour can last anywhere from 10-20 hours while that of a chimpanzee lasts only 2 hours.
2. Humans have the ability to walk straight, the trade off however is that it is extremely difficult and painful to give birth to a big brained human baby.
2. Which of the following can survive either with oxygen or without it?
facultative anaerobes
3. Where are you likely to find a photoautotroph?
near the surfaces of lakes and streams
4. During what process do prokaryotes exchange genetic information?
conjugation
5. What would be a direct consequence of the disappearance of nitrogen-fixing prokaryotes?
<span>Organisms would not be able to get nutrients they need to make proteins</span>
Answer:The correlated trait exercise shows that when two characters are correlated, the optimal values and selection strengths rise and fall together.
Explanation: Correlation refers to statistical (linear) relationship between two random variables. When traits are correlated, change in one is associated with change in the other.
Correlation coefficient (c.c.) measures strength of association between two variables in the same individual or experiment. It can range from -1 to +1. C.c. can be positive, negative or weak.
1. A positive c.c. means that an increase in one variable is associated with an increase in the other variable.
2. A negative c.c. means that an increase in one variable is associated with a decrease in the other.
3. A c.c. near zero indicates a weak relationship between the variables.
Correlation can be represented by scatter plot as shown in the attached image.
The graph would be the 4th picture, a bell-shaped graph.
The optimum temperature should have the highest rate of enzyme activity. When the temperature is increased or decreased, the enzyme activity would be decreased. The graph that follows both conditions should have a bell shape graph.