How does genetic combination contribute to natural selection and evolution?
A. It moves less desirable genes to the same chromatid within a tetrad.
B. It concentrates superior genes from the parents on fewer chromatids.
C. It improves genes by making changes to the nucleic acid sequences.
D. It creates differences among offspring of the same parents.

What two fields of study provide the core information that is used to classify organisms?

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what