Search & Filtering
Why a degenerate genetic code helps protect an organism from the effects of mutations?
Do you agree that camel has larger vacuoles compared to human?
Outline the members of the following kingdoms or groups which are important in the public health arena and indicate ways in which they are socially and economically important: Kingdom Animalia, Kingdom Plantae, Kingdom Fungi, the Kingdoms of the Protist group, the members of Eubacteria and Archaebacteria.
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)
How does water move in vascular plants? What are the types of driving forces? What are their magnitudes?
Explain Miller’s experiment and its significance.
State what happens to the following in excess sodium chloride intake
I. ECF osmolarity before water shif
II. movement of water across ECF and ICF
III. Volume of ECF and ICF after water shift
IV. Osmolarity of ICF and ECF after water shift
Lichens secrete acids that often break up the rocks on which they live. Then other organisms, such as flowering plants, can grow on the rocks. Which process best describes the change the ecosystem is undergoing?
