Holekamp and Sherman observed that male ground squirrels disperse from their nat

Question

Holekamp and Sherman observed that male ground squirrels disperse from their natal area much more frequently than do females. Here are some sentences paraphrased from their review paper; how many of them are conclusions? 1. We found that castration of juveniles had no significant effect on dispersal distance 2. Under the organizational hypothesis, we expect that exposing neonatal females to testosterone should increase dispersal distance 3. We suspected that gonadal steroids (testosterone) might mediate natal dispersal 4. Dispersal might help juvenile males to avoid fitness costs associated with incest 5. Our results on female dispersal are consistent with studies of other vertebrates and support an organizational role for steroids 6. Natal dispersal might be caused by aggression directed at juvenile males A. One OB. Two OC. Three D. None of them are conclusions

Explanation / Answer

1. The answer is c. Three.

Explanation:

As Holekamp and Sherman observed that male ground squirrels disperse from their natal area much more frequently than do females, they conclude their observation by providing a reason that gonadal steroids like testosterone might mediate natal dispersal. The conclusion may be a reasoning, supposition, or the opinions based upon some experiments. Some conclusions may be verified by later experiments also. Thus, in this case scientists confirmed that frequent natal dispersal of males than females and they give reason for their findings that it may due to the testosterone.

2. The answer is A.

Explanation

Partner preference formation is blocked in the female prairie voles by infusion of an oxytocin antagonist after mating. The antagonist of oxytocin blocks the pair bond formation in the female prairie voles.

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