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we know that natural selection will not result in evolution if a trait is not heritable. However, it is also possible that a trait with heritable variation will not show an evolutionary response under natural selection. Name and describe 2 types of natural selection that do not necessarily change allele frequencies despite the presence of heritable variation, and give an example (real or hypothetical) of each.

Ozone hole refers to

A)hole in ozone layer

B)decrease in the ozone layer in troposphere

C)decrease in thickness of ozone layer in stratosphere

D)increase in the thickness of ozone layer in troposphere

Describe the difference in evolutionary terms between a neutral trait and an advantageous trait. Will a neutral trait (such as the presence of pelvic bones in snakes, which are legless) likely be eliminated from a population by adaptive evolution? Why or why not?

1. What is neutralisation? 

2. Three difference between neutralisation and esterification 

Name the structures and organelles which are common in plant cell, animal cell, and prokaryotic cell.

Why is it that starch is not digested in the stomach 

Pollination is best defined as

a)transfer of pollen from anther to stigma

B)germination of pollen grains

C)growth of pollen tube in ovule

D)visiting flowers by insects

Plants receive their nutrients mainly from

A)chlorophyll

B)atmosphere

C)light

D)soil

Describe Darwin’s Theory of Natural Selection. Using an example of your own, illustrate how the idea of ‘the struggle for existence’ is related to the theory.

Incomplete dominance: In four-o'clock plants, red flower color is dominant to white flower color. However, heterozygous plants have a pink color. What is the probability from a cross of two pink flower plants that produce a total of 6 offspring, to get: 2 red flower, 3 pink flower, and 1 white flower?

What does a carnivorous animal eat and list one of a carnivorous animal?