b) A population first divided into two parts, then three parts, and then four parts, until a description identifies a single member.
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B seasonal variations in climate tend to increase with distance from the equator
Answer:
the sun's magnetic field.
Explanation:
The horse and donkey, though closely related by sharing a common ancestor, are different species. They have different number of chromosomes hence pairing of homologous chromosomes during fusion of gametes becomes complicated. The mule will have an extra chromosome from the horse hence will have abnormalities such as sterility. A Mule is unable to reproduce due to this same phenomenon. Homologous chromosomes are not well paired for meiosis I.
