Zadanie 4c
Explain how comparisons of DNA base sequences provide evidence for evolution.
Evolution and speciation
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 25 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 23 z 57 arkuszy w bazie.
Zadania z tego działu: 25 Otwórz w wyszukiwarce z filtrami
Zadanie 6
Common cellular features coexist with the diversity produced by evolution. (a) Describe the roles of components shared across cellular organisms. (b) Discuss how separate populations can become distinct species. (c) Outline key features of the genetic code.
Zadanie 22
Consider evidence used to investigate shared ancestry and inherited evolutionary change. I. Comparisons of homologous RNA sequences II. A claim that two independently evolved flight surfaces must share a recent wing-bearing ancestor III. Inherited changes…
Zadanie 22
The limb plans below retain corresponding bones despite their different uses. Which kind of evidence for common ancestry do they illustrate? A. Analogy produced only by the same habitat B. Unrelated structures that happen to perform identical functions C.…
- Materiał graficzny
Zadanie 22
The streamlined bodies of a shark and a dolphin evolved in separate vertebrate lineages. Which interpretation is correct? A. A similar aquatic demand has favoured convergent evolution of an analogous overall form B. The dolphin descended directly from the…
Zadanie 3b
Describe how the two species could have arisen from the ancestral population.
- Materiał graficzny
Zadanie 8
Consider connections between biological processes at different levels of organization. (a) Outline how mitosis preserves hereditary information in new cells. (b) Describe the role of DNA variation in speciation. (c) Explain the genetic basis of inheritance…
Zadanie 22
Penguins are birds and seals are mammals. Both swim using flattened forelimbs with corresponding humerus, radius and ulna bones. Which evolutionary interpretation best explains these observations? A. The swimming specialisations are homologous because the…
Zadanie 22
Which observation would support calling two structures analogous? A. They perform similar roles but their specialised forms arose independently B. They occur only in members of one species C. They have identical DNA sequences at every locus D. They differ in…
Zadanie 23
A shark and an ichthyosaur independently evolved streamlined bodies from ancestors with different body forms. Which interpretation best describes this similarity? A. Artificial selection producing homologous wings B. Divergent evolution producing homologous…