本题目来源于试卷: Unity and Diversity A.6 Diversity of Organisms，类别为 IB生物学
[单选题]
The following table shows the diploid chromosome number of a ra ,5n1bms;(mjmfiyv.t qyl (hka;4cm, n z rjc6imy))qz2v 9 h(kge of species.
Which of these statements is correct?
A. The giant panda has more genes than the other species
B. The yellow fever mosquito has the fewest genes from these species
C. The gametes of carrots have 18 chromosomes
D. The chromosome number is a characteristic of a species
参考答案: D
本题详细解析:
All species have a characteristic number of chromosomes (choicew3pb t hc)mt g0+frr w7-oo/5o D). Gene number is not determined by chromosome number because chromosomes are not all the same size and do not hold the same )50c7 wwgfot o/ r3+p-bhotrmnumber of genes (choice A and choice B). Choice C is incorrect because gametes have a haploid number of chromosomes which means gametes of carrot plants have 9 chromosomes.
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