Embibe Experts Solutions for Chapter: Heredity and Evolution, Exercise 1: Exercise

In Dalmatian dogs, the allele for black spots is dominant to the allele for liver spots. If a breeder has a black-spotted dog, how can he or she find out whether it is homozygous or heterozygous for this characteristic? Use genetic diagrams to explain the answer.

A man who is red-green colour-blind marries a woman with normal vision. They have three sons and two daughters. One of the sons is red-green colour-blind. All the other children have normal colour vision. Draw a genetic diagram to suggest an explanation for this.

Two women gave birth in the same hospital on the same afternoon. Their babies were taken away and then brought back to them one hour later. One of the women were worried that she had been given the wrong baby. She asked for blood tests to be carried out. The hospital found that she was group A and her husband was group O. The other mother was group AB and her husband was group A. The woman with blood group A had been given the baby with blood group O. The woman with group AB was given the baby with blood group B. Use genetic diagrams to determine whether the women had been given the right babies.

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

Read the given passage and answer the following questions. 
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.