A snapdragon plant that bred true for white petals was crossed to a plant that bred true for purple petals, and all the F1 had white petals. The F1 was selfed. Among the F2, three phenotypes were observed in the following numbers

white                              240

solid-purple                    61

spotted-purple                19

Total                              320

Which of the following reason to deviation f2 phenotype ratio ?

#Question id: 5346

#SCPH28 | Zoology

The following typical pedigree illustrates the key point that affected children are born to unaffected parents: Which of the following is correct statement?

#Question id: 5347

#SCPH06 I Botany

The inheritance of a given disorder is recorded in small families shown below: Based on the above limited information, which one of the following inheritance pattern best explains the observations?

#Question id: 5347

#SCPH28 | Zoology

The inheritance of a given disorder is recorded in small families shown below: Based on the above limited information, which one of the following inheritance pattern best explains the observations?

#Question id: 5348

#SCPH28 | Zoology

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

Which of the following above offspring is not possible to carry miniature wings?

#Question id: 5349

#SCPH28 | Zoology

The following is the inheritance pattern of a trait under observation:

(i) The trait often follow cris cross inheritance 

(iii) Unaffected father born to affected daughter

The trait is likely to be

#Question id: 5350

#SCPH28 | Zoology

Which of the following most probable mode of genetic disorder?