Among humans,you can observe that there is variability in shape (size),skin color,and other traits.The variety in a small population results from ___ in sexual reproduction and meiosis.

Question

Quizplus · Accepted Answer

All of the answer choices are correct. Independent assortment, random fertilization, and crossing over are all mechanisms that introduce variability during sexual reproduction and meiosis. Independent assortment refers to the random arrangement of homologous chromosomes during meiosis I, which creates unique combinations of maternal and paternal chromosomes in gametes. Random fertilization refers to the fact that any sperm can fertilize any egg, creating unique combinations of maternal and paternal chromosomes in the zygote. Crossing over refers to the exchange of genetic material between homologous chromosomes during meiosis, creating new combinations of alleles on each chromosome. Combined, these mechanisms create a high degree of variability in offspring, even in small populations.

Among Humans,you Can Observe That There Is Variability in Shape