What is the chromosome number in a zygote formed by fertilization of two normal haploid gametes?
QUESTION
Which meiotic stage is when sister chromatids separate to opposite poles?
QUESTION
What is the key distinction between homologous chromosomes and sister chromatids?
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ANSWER
Homologs are maternal vs paternal; sisters are identical copies. Homologous chromosomes carry the same genes but may differ in alleles due to parental origin, whereas sister chromatids are exact replicas post-replication.