本题目来源于试卷: Unity and Diversity A.8 Evolution and Speciation，类别为 IB生物学
[单选题]
Triticum monococcum is an ej5kfpfj/stdl xb+ ;2ny)r2 q4inkorn wheat and was the first dome):a4 8twa5kv yawhawwi908tr96alv8 ec*wnx sticated crop. It has a diploid number of 14 chromosomes. Triticum turgidum is a durum wheat with a total of 28 chromosomes8r 984tva) 9 wtae60ww:vin *yl5w kxw8a haca. It is a result of the hybridization of Triticum monococcum and another grass Aegilops speltoides which also has a diploid number of 14. What is the correct term for Triticum turgidum in comparison to Triticum monococcum?
A. Haploid
B. Triploid
C. Hexaploid
D. Tetraploid
参考答案: D
本题详细解析:
The normal diploid number of an organism is when they have two of each chromosome (2n). Choice A is incorrect as haploid (n) means to have half the normal number of chromosomes, which would be 7. Choice B is incorrect as triploid (3n) means having three of each chromosome, which would be 21. Choice C is incorrect, as hexaploid (6n) means having six of each chromosome, which would be 42. Tetraploid (4n) means having four of each chromosome, which is 28, Choice D.
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