Zadanie 6b
Explain whether crossing a plant heterozygous for symmetry and pigmentation (with the dominant alleles in coupling) with an asymmetric-leaved, green plant should also yield a1:1:1:1 phenotypic ratio.
- Materiał graficzny
Linked alleles on homologous chromosomes
Represent allele arrangements on chromosome pairs and explain departures from independent assortment.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2025.
Zadania sprawdzające tę umiejętność: 7 Otwórz w wyszukiwarce z filtrami
Zadanie 31
A double heterozygote is test-crossed with a double recessive. The offspring are: dominant for both traits38; first trait only42; second trait only41; recessive for both39. Which interpretation is best supported? A. Both alleles are codominant at each locus B.…
Zadanie 7b
Explain whether the observations fit the Mendelian prediction for independent assortment in this cross.
Zadanie 5a
In a hypothetical beetle, dark body (D) is dominant to pale body (d), and broad wings (W) to narrow wings (w). A dark, broad-winged double heterozygote is crossed with a pale, narrow-winged individual. Offspring phenotype | Expected ratio if loci assort…
Zadanie 8
(a) Outline how fruit-fly crosses can investigate inheritance and what such experiments can reveal. (b) Describe methods used in cladistics and uses of the resulting evidence.
Zadanie 32
In a model insect, dark wings and long antennae are dominant traits. Which cross is most useful for testing whether the two loci are linked? A. A double heterozygote crossed with a double homozygous recessive B. Two double homozygous dominant parents C. A…
Zadanie 2b
Explain why a dihybrid cross involving linked loci can differ from the ratio expected with independent assortment.
- Materiał graficzny