Zadanie 30
Which human trait is an example of a phenotype influenced by many genes? A. ABO blood-group class B. Red-green colour blindness from a single X-linked allele C. Adult height D. Phenylketonuria caused by two recessive PAH alleles
Polygenes, environment and continuous variation
Distinguish continuous from discrete traits and apply mean, median or mode to quantitative variation.
Tę umiejętność sprawdza 6 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 6 Otwórz w wyszukiwarce z filtrami
Zadanie 31
A class measures the heights of students of the same age. The distribution is shown below. Which combination best explains this continuous variation? A. A single recessive allele and ABO blood group B. Effects of several genes together with differences in…
- Materiał graficzny
Zadanie 4b
Using these data, discuss the hypothesis that human height is determined by polygenic inheritance.
- Materiał graficzny
Zadanie 35
Which genetic explanation is consistent with the many small differences in seed mass in this model crop? A. Only one dominant–recessive gene can produce any quantitative variation B. Several genes contribute to the trait C. A single allele necessarily produces…
- Materiał graficzny
Zadanie 36
A measured pigment trait varies continuously from very pale to very dark in a population, rather than falling into a few distinct classes. Which genetic explanation is most consistent with this observation? A. Contributions from multiple genes B. Only one…
Zadanie 8
Nucleic acids underlie inherited biological variation. (a) Draw and label one RNA nucleotide. (b) Describe how DNA profiling can be used to investigate paternity. (c) Explain why human adult heights vary.