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Course: Cambridge AS & A Level Biology 9700 ...
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Cambridge AS & A Level Biology 9700 — Revision Notes

1 · Cell Structure

0/26

2 · Biological Molecules

0/51

3 · Enzymes

0/29

4 · Cell Membranes and Transport

0/41

5 · The Mitotic Cell Cycle

0/21

6 · Nucleic Acids and Protein Synthesis

0/22

7 · Transport in Plants

0/28

8 · Transport in Mammals

0/39

9 · Gas Exchange

0/13

10-11 · Infectious Disease and Immunity

0/43

12 · Energy and Respiration

0/37

13 · Photosynthesis

0/23

14-15 · Homeostasis and Control

0/57

16 · Inherited Change

0/34

17-18 · Selection, Evolution, Classification and Conservation

0/69

19 · Genetic Technology

0/44
Quiz

16.2.5 Predicting Inheritance- Chi-squared Test – Exam questions

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  • Questions count: 4
  • Passing grade: B+
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1.
Degrees of freedom for a 3:1 chi-squared test:
1
2
3
4
2.
Degrees of freedom for a chi-squared test with four phenotype classes is:
3
4
2
1
3.
Which statement best describes Chi-squared test?
A statistical test comparing observed with expected frequencies to decide whether any difference is due to chance.
The location of a gene on a sex chromosome (usually the X), so that inheritance patterns differ between males and females.
A length of DNA at a particular locus on a chromosome that codes for a polypeptide or functional RNA.
A situation in which both alleles in a heterozygote are fully expressed in the phenotype.
4.

The chi-squared test is used in genetics to

test whether observed and expected ratios differ significantly
calculate allele frequency
find the mean
measure variation
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  • 3
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Part of 16 · Inherited Change — see every lesson and quiz in this unit.
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