Heredity and Variation Set 3

Q1 | Match the following_ans_key_Column I Column II_ans_key_1. Single gene inheritance a. 1 : 1: 1 : 1_ans_key_2. Double gene inheritance b. 1 : 2 : 1_ans_key_3. Test cross c. 3 : 1_ans_key_4. Incomplete dominance d. 9 : 3 : 3 : 1

Q2 | Match the following_ans_key_Column I Column II_ans_key_1. Co- dominance a. More then two optional forms of a gene_ans_key_2. Polygenic inheritance b. Multiple effect of a single gene_ans_key_3. Multiple alleles c. Quantitative inheritance_ans_key_4. Pleiotropism d. Both gene express their expression independently

Q3 | What will be expected blood groups in the off spring when there is a cross between AB blood group mother and heterozygous B blood group father ?

Q4 | Which law of Mendel can be explained on chromosomal basis of inheritance ?

Q5 | The value of X/A is given in column A and sex of the fly is written in column B._ans_key_Match the following :-_ans_key_Column I Column II_ans_key_1. 1 (

Q6 | Out of the marked portions X, Y and Z, in which region the male worm develop ?

Q7 | Which kind of structural abnormality is seen in the above chromosome?

Q8 | Name the abnormality seen in chromosome number - 2

Q9 | What does the following pedigree chart represent ?

Q10 | What kind of chromosomal aberrations is seen in the given diagram?

Q11 | What kind of sex determination is seen in the given chart?

Q12 | What do A, B, C represent in the given diagram?

Q13 | What does the diagram represent ?

Q14 | Whose karyotype is represented below ?

Q15 | What does the above cross represent ?

Q16 | The genes Controlling the seven characters of a pea plant studied by Mendel are now known to be located on how many different chromosomes? AIPMT - 2003

Q17 | Which one of the following traits of garden pea studied by Mendel was a recessive feature? AIPMT - 2003

Q18 | Down's Syndrome is caused by an extra copy of chromosome number 21. What percent age of off spring produced by an affected mother and a normal father? AIPMT - 2003

Q19 | Lack of independent assortment of two genes A and B in fruitfly the Drosophilia is due to

Q20 | . A male human is heterozygous for autosomal genes A and B and is also hemizygous for haemophilic gene h. What proportion of his sperms will be abh? AIPMT - 2004

Q21 | . In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt. AIPMT - 2004

Q22 | A normal woman, whose father was colour blind is married with normal man. The sons would be AIPMT - 2004

Q23 | .The recessive genes located on X - chromosome of humans are alwaysAIPMT-2004

Q24 | . Inorder to find out the different types of gametes produced by a pea plant having the genotype AaBb it should be crossed to a plant with the genotype AIPMT - 2004

Q25 | . A woman with normal vision, but whose father was colourblind, marries a colourblind man. AIPMT - 2004 Suppose that the fourth child of this couple was a boy. This boy