In mice, the allele for black fur colour is dominant over the allele for white fur colour. What does this mean in a mouse population?
Important Questions on Heredity and Evolution
The given figure shows undisturbed sedimentary strata at the bottom of an ocean. The fossil found in layer Y resembles the fossil found in layer X. This similarity most likely suggests that
Albinism is an inherited condition caused by a recessive allele ‘’. ‘’ is the dominant allele for the normal condition. Study the given pedigree chart and identify the genotypes of individuals and .
| R | S | |
| (A) | ||
| (B) | ||
| (C) | ||
| (D) | ||
Humans inherit colour of their eyes from their parents. Brown-eyed couple has three blue-eyed children. Which of the following statements gives correct explanation of this situation?
(i) Each parent has an allele for brown eyes and an allele for blue eyes.
(ii) The allele for blue eyes is recessive.
(iii) The probability that their next child will have blue eyes is .
(iv) The probability that their next child will have brown eyes is .
Siddhi studied forelimbs of three organisms and described them as follows:
Organism X- Long and short bones, covered with muscles, used for running.
Organism Y- Long and short bones, covered with feathers used for flying.
Organism Z - A layer of a complex chemical with supporting framework which is not made of bones and used for flying.
Select the option that shows correct relationship between these on organisms.
Given pedigree chart depicts the inheritance of attached ear-lobes, an autosomal recessive trait.
Which of the following conclusions drawn is correct?
