Biology · 2001 · November · Paper 3 · HL · Question paper
BiologyQuestion paper2001HLNovember
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This question paper is listed under Biology in the 2001 examination archive. Its catalogue level is HL. The catalogue session is November. The information below helps you identify the document before opening the complete PDF. Subject, year and session labels come from the archive catalogue; the original cover remains the reference if a label differs. A file is not automatically suitable for your current syllabus simply because its subject name matches.
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BIOLOGY
HIGHER LEVEL
PAPER 3
Tuesday 6 November 2001 (morning)
1 hour 15 minutes
N01/410/H(3)
INTERNATIONAL BACCALAUREATE
BACCALAURÉAT INTERNATIONAL
BACHILLERATO INTERNACIONAL
881-136 16 pages
INSTRUCTIONS TO CANDIDATES
! Write your candidate name and number in the boxes above.
! Do not open this examination paper until instructed to do so.
! Answer all of the questions from two of the Options in the spaces provided. You may continue
your answers in a continuation answer booklet, and indicate the number of booklets used in the
box below. Write your name and candidate number on the fr ont cover of the continuation
answer booklets, and attach them to this question paper using the tag provided.
! At the end of the examination, indicate the letters of the Options answered in the boxes below.
Number
Name
TOTAL
/40
TOTAL
/40
TOTAL
/40
NUMBER OF CONTINUATION
BOOKLETS USED .........
/20/20/20
/20/20/20
IBCATEAM LEADEREXAMINEROPTIONS ANSWERED
Option D – Evolution
D1. Petrogale lateralis is an Australian marsupial, commonly known as the black-footed rock-wallaby.
Evidence suggests that about 30 000 years ago it spread to an island, 55 km away from the
mainland. Since then the island and the mainla nd populations have remained isolated from each
other. Conservationists recently investigated th e populations. They measured the male : female
ratio and the percentage of females that had re produced and were carrying offspring. They also
took blood samples from rock-wallabies in both popul ations. Tests on thes e samples allowed the
genotype of each of the rock-wallabies to be deduced for 14 different genes. If more than one allele
of a gene is present in a population, the population is polymorphic for that gene. If only one allele
is present, the population is non-polymorphic. The results of the investigations are shown in the
following table.
10 of the 14 genes are
polymorphic
1 of the 14 genes is
polymorphicPolymorphic genes
8952Percentage of females
carrying offspring
1 : 1.51 : 2.5Male : female ratio
Mainland populationIsland population
(Source: Eldridge, MD, et al, Conservation Biology, 13 (3), pages 531-538, 1999)
[1]
(a) Suggest one reason for the difference in the
File information
Subject
Biology
Document type
Question paper
Year
2001
Session
November
Level
HL
Paper
3
Examination zone
Not labelled in the archive
Language
Not labelled in the archive
File size
641 KB
Pages
16
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