The visible cross shaped points at which homologous chromatids have exchanged segments are called
Correct answer: A. chiasmata
- A. chiasmata
- B. centromeres
- C. kinetochores
- D. telomeres
Explanation
Chiasmata can be seen under the microscope in prophase one and mark where crossing over has occurred. The centromere is the chromatid junction and the kinetochore its spindle attachment, neither of which involves exchange.
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Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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