Page 58 - SUBSEC October 2017_Neat

UNIT 1
MODULE 2: GENETICS, VARIATION AND NATURAL SELECTION (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

3. Patterns of Inheritance

Students should be able to:

3.1. use genetic diagrams to Gene, allele, dominant, Analyse seed samples of
solve problems involving recessive, codominant, peas for Mendelian
monohybrid and dihybrid homozygous, dihybrid ratio.
crosses; heterozygous, sex
linkages, codominance
multiple alleles and
dominant epistasis.
Candidates should
understand the ratios.

3.2. analyse the results of a Formulae will be given.
genetic cross by applying Set out data in tabular
the Chi-square test; and, form.

3.3. determine whether the The concept of
difference between the probability. Explanation
observed and expected of the use of 0.05
ratio is significant using the confidence limits and the
results of the Chi-square null hypothesis.
test.

4. Aspects of Genetic Engineering

Students should be able to:

4.1. outline the principles of Restriction enzymes as
restriction enzyme use to “molecular scissors” and
“cut” sections of DNA and Ligase enzyme as
ligase enzyme to “paste” “molecular glue”.
DNA together; Importance of these
classes of enzymes in
development of R-DNA
technology. Mention
advanced genome editing
tools, such as CRISPR-
Cas9.

CXC A10/U2/17
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