Difficulty: Easy
Correct Answer: Monkey
Explanation:
Introduction / Context:
Cloning is a technique in biotechnology where genetically identical copies of an organism are produced. Earlier, animals such as the sheep Dolly had been cloned using somatic cell techniques. When Chinese scientists successfully cloned two identical long tailed macaques, it represented a major step because these animals are primates, closer to humans in evolutionary terms than previously cloned species. This question tests whether you recall which broad animal group these cloned macaques belong to from the given options.
Given Data / Assumptions:
Concept / Approach:
Long tailed macaques are a type of monkey, belonging to the primate order. Cloning primates is technically challenging due to complexities in embryonic development and epigenetic regulation. The achievement by Chinese scientists was widely reported as the first successful cloning of monkeys using techniques similar to those used for Dolly the sheep. Among the given options, the only correct classification for long tailed macaques is monkey. Humans are also primates but are a separate species, and there is no indication that humans were cloned. Dogs and sheep have been subjects of other cloning efforts but do not match the description in this particular question.
Step-by-Step Solution:
Step 1: Recognise that long tailed macaques are non human primates commonly referred to as monkeys.
Step 2: Recall reports that Chinese scientists cloned primates for the first time, specifically macaque monkeys, which was considered a breakthrough.
Step 3: Examine option a, human, and reject it because there is no accepted evidence of humans being cloned in this context.
Step 4: Check option b, dog, and note that while dogs have been cloned, the question clearly mentions long tailed macaques, which are not dogs.
Step 5: See that option c, monkey, correctly matches the general animal group for macaques, while option d, sheep, refers to Dolly, a different earlier cloning example.
Verification / Alternative check:
Media articles and scientific reports about this milestone describe the two cloned primates as long tailed macaque monkeys. Photographs and descriptions show them as small primates with characteristic monkey features. The reports also emphasise that this is the first time monkeys, which are closer relatives to humans, have been cloned using certain advanced methods. These details confirm that the correct general term for the animals in question is monkeys, not humans, dogs or sheep.
Why Other Options Are Wrong:
Option a, human, is incorrect because there is no credible scientific report of human cloning in this context, and the question specifically mentions macaques.
Option b, dog, does not match the description of long tailed macaques, which are primates, whereas dogs are canids.
Option d, sheep, refers to Dolly, a famous cloned sheep, but Dolly was cloned earlier and is not the subject of this particular achievement by Chinese scientists.
Common Pitfalls:
Some learners may confuse this cloning event with the cloning of Dolly the sheep and be tempted to choose sheep automatically when they see cloning mentioned. Others might focus only on the phrase for the first time and think of humans, which often receive media attention. Carefully reading the question and noting the explicit mention of long tailed macaques, which are monkeys, prevents such mistakes and leads to the correct identification of the animal group as monkeys.
Final Answer:
The Chinese scientists successfully cloned two identical monkeys, specifically long tailed macaques.
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