Microbiology Answers

1.     Speciation is the formation of a new species. Answer the following questions.

a.     What two factors are necessary to produce a new species? (2 marks)

-         Isolation

-         Genetic divergence 

is this correct? will upload question b cant upload it with this post sorry

1.     Explain chemical warfare and its role in predator-prey interactions. Provide an example of the use of chemicals or toxins. (2 marks)

 doing an assignment right now and i am kind of confused on how to answer this question. please help me out thank you.

1.     Speciation is the formation of a new species. Answer the following questions.

a.     What two factors are necessary to produce a new species? (2 marks)

-         Isolation

-         Genetic divergence

b.     You are having a conversation with Cindy, the magic turtle. Cindy is very curious about the formation of species. She tells you excitedly how one species of turtle inhabited the same geographical area, but ended up forming two different species over time. She admits she is a bit surprised by this; she thought that populations needed to be geographically separated from each other in order to form two different species. Explain to Cindy how speciation can occur without geographical separation. Name the type of pathway to speciation that occurred in this case. (3 marks)

Not sure how to answer b please help me thanks.

Can you differentiate Gram positive and Gram negative bacteria using simple staining procedure? Why?

Can you differentiate Gram positive and Gram negative bacteria using simple staining procedure? Why?

b.     What is the allele frequency of the recessive allele in the original population? Show all steps used to determine your answer. (1 mark)

c.     What is the allele frequency of the dominant allele in the original population? Show all steps used to determine your answer. (1 mark)

d.      Determine the number of individuals in the original population of hamsters that are heterozygous for coat colour. Show all steps used to determine your answer. (3 marks)

e.     How many individuals in the original population of hamsters possess a pink coat colour? (1 mark)

f.     Determine whether evolution has taken place from the original generation to the new generation. Show all steps used to determine your answer. (3 marks)

 continuation of question 1 of the first question.

1.     In a certain population of hamsters, 300 out of 1600 hamsters demonstrate a recessive purple coat colour (the dominant coat colour is pink). These hamsters breed and in the following generation, 375 out of 2000 had the purple coat colour. Answer these questions: a).   What is the homozygous recessive genotype frequency in the original population? Show all steps used to determine your answer. (1 marks)

 State 2 similarities between the structure of a bacterium and a virus

Mr Smith has blood type AB, select the possible genotype/s that would result in this blood type.

Question 8 options:

A) Io Io

B) Ia Io

C) Ia Ia

D) Ia Ib

E) Ib Io

F) Ib Ib

D?

Mrs Smith has blood type A, select the possible genotype/s that would result in this blood type.

Question 9 options:

A) Io Io

B) Ia Io

C) Ia Ia

D) Ia Ib

E) Ib Io

F) Ib Ib

if a bacterium has a generation time of 30 minutes and you start with 100 cells at time 0, how many cells will you have in 30 minutes