Blood groups A , B , AB and O occur in humans , the blood groups A and B are found in Apes but not in monkeys . This suggest that

Options

A. Human, monkey and apes are related
B. Human being are moer closely related to monkey
C. Human being are not related to apes
D. Human being are more closely related to apes than to monkeys

Answer

To solve the question regarding the relationship between humans, apes, and monkeys based on the ABO blood group system, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Blood Groups**:
- Humans have four blood groups: A, B, AB, and O.
- Blood group A has antigen A and antibody B.
- Blood group B has antigen B and antibody A.
- Blood group AB has both antigens A and B but no antibodies.
- Blood group O has no antigens but has both antibodies A and B.

**Hint**: Familiarize yourself with the ABO blood group system and the presence of antigens and antibodies.

2. **Identifying Blood Groups in Apes and Monkeys**:
- The question states that blood groups A and B are found in apes but not in monkeys.
- This indicates that monkeys lack the blood groups that are present in both humans and apes.

**Hint**: Compare the blood group presence in different species to identify relationships.

3. **Analyzing the Relationships**:
- Since apes share blood groups A and B with humans, it suggests a closer evolutionary relationship between humans and apes.
- Monkeys do not have these blood groups, indicating they are more distantly related to humans.

**Hint**: Consider evolutionary biology concepts when assessing relationships between species.

4. **Evaluating the Options**:
- The options provided are:
1. Humans, monkeys, and apes are related to each other.
2. Humans are more closely related to monkeys.
3. Humans are not related to apes.
4. Humans are more closely related to apes than to monkeys.

- Based on our analysis, options 1, 2, and 3 are incorrect because:
- Monkeys lack the blood groups found in humans.
- Humans and apes share blood groups A and B.
- Therefore, option 4 is correct: Humans are more closely related to apes than to monkeys.

**Hint**: Eliminate options based on the evidence gathered from the blood group analysis.

5. **Conclusion**:
- The correct answer is that humans are more closely related to apes than to monkeys due to the presence of shared blood groups A and B in both humans and apes.

**Hint**: Summarize your findings to reinforce your understanding of the relationships between the species.

### Final Answer:
Humans are more closely related to apes than to monkeys.