For a trait known to be caused by a mitochondrial gene variant, there may be an occasional female that can transmit different phenotypes to her progeny on an apparently random basis. What situation might you suspect?

#Question id: 5327

#Unit 8. Inheritance Biology

In the human pedigree shown here, the daughter indicated by the black circle (II-1) has a form of deafness determined by a recessive allele. What is the probability that the phenotypically normal son (II 3) is heterozygous for the gene?

#Question id: 5328

#Unit 8. Inheritance Biology

Which of the following mode of inheritance of genetic disorder?

#Question id: 5329

#Unit 8. Inheritance Biology

A sex-linked recessive allele c produces a red-green colorblindness in humans. A normal woman whose father was colorblind marries a colorblind man. What are the chances that the second child from this marriage will be a colorblind boy?

#Question id: 5330

#Unit 8. Inheritance Biology

First child of both affected couple has normal, an autosomal dominant disorder. What is probability of second child of this couple would have diseased?

#Question id: 5331

#Unit 8. Inheritance Biology

In some me insect XX is female and XO is male. Red body color caused by recessive mutation, while wild type body color is green .Gene for body colour on X chromosome .if homozygous red female is crossed with wild type male, the phenotype of their offspring will be

#Question id: 5332

#Unit 8. Inheritance Biology

Which of the following are incorrect regarding Sex chromosome in human?