#Question id: 12213
#Unit 7. System Physiology – Animal
#Question id: 15736
#Unit 12. Applied Biology
#Question id: 5348
#Unit 8. Inheritance Biology
Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the allele for long wings (XL). Following different cross with resulting progeny were possible
|
Male parent |
Female parent Heterozygous |
Male offspring |
Female offspring |
|
Long wings XLY |
Long wing XL Xm |
A |
B |
|
Miniature wings XmY |
Long wing XL Xm |
C |
D |
Which of the following above offspring is not possible to carry miniature wings?
#Question id: 5717
#Unit 8. Inheritance Biology
Following homologous chromosome is a heterozygous for inversion
Following some statement regarding above abnormality is correct?
A. During meiosis, one chromosome twists once at the ends of the inversion to pair with the other untwisted chromosome
B. Crossing-over within the inversion loop at meiosis connects homologous centromeres in a dicentric bridge.
C. Tension eventually breaks the dicentric bridge, forming two chromosomes with terminal deletions.
D. the RF is zero among genes within the inversion region
#Question id: 10703
#Unit 10. Ecological Principles
Keystone predators can maintain species diversity in a community if they