If normal parents have an albino, what is the probability that their next child will be normal?

  • &frc34;
  • ½
  • 1/3
  • 1/5

Cross between two parents of genotype- (male) AaBbccDdee and (female) AabbCcDdee will give progenies out of which how many will have same genotype as that of female parent?

  • 1/8
  • 1/32
  • 1/16
  • ¼

Number of different types of gametes produced by genotype AABBCCDDEEFFGGHH will be

  • a. 20

  • b. 2

  • c. 102

  • . zero

In humans, curly hair is dominant (C) to straight hair (c). A woman who is heterozygote for curly hair marries to a normal man. What will be the probability of first and second child having curly hair?

  • &frc14;
  • ½
  • 1/8
  • 1/6

Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant to starchy endosperm (w). What is the genotype of Homozygous colourless, smooth and waxy endosperm and homozygous coloured, wrinkled and starchy endosperm?

  • a. ccSSWW and CCssWW

  • b. ccSSWW and CCssww

  • c. CCSSWW and CCssww

  • . ccSSWW and CCSSww

Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant to starchy endosperm (w). Cross is made between pure dominant trait and pure recessive trait parents, what will be the genotype of F2 progenies that will be coloured wrinkled and waxy?

  • CCssWW
  • CCssWw and CcssWw
  • CcssWW
  • All the above options are correct.

A plant, on repeated self pollination, preserves the trait expressed for many generations. Such a plant is said to be:

  • Panmictic

  • Homologous

  • Apomictic                                                

  • Pure line

The F1 progeny in monohybrid crosses by Mendel resembled:

  • The parent exhibiting dominant trait completely

  • The parent exhibiting recessive trait completely

  • The parent exhibiting dominant trait partly

  • The parent exhibiting recessive trait partly

Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth

seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant

to starchy endosperm (w).what will be the ratio of F2 progenies that will be

coloured wrinkled and waxy? 

  • 1. 9/64 

  • 1/64 

  • 3/64 

  • 7/64

Eye colour in humans is controlled by a single pair of gene where B i.e. brown is dominant to b i.e. blue. What will be the genotype of a brown eyed man who marries a blue eyed lady and has blue eyed child?

  • a. BB

  • b. Bb

  • c. BB and Bb

  • . bb

if two brown eyed people marry each other and each one had one blue eyed parent. What is the proportion of eye colour in their offspring?

  • a. 3:1

  • b. 1:4

  • c. 1:2

  • . 2:2

In dogs, dark coat colour (A) is dominant to albino (a) and short hair (L) is dominant to long hair (l). Determine the probable genotype of the parent who are dark and short and have progenies in the following ratio:

Dark and short-89

Dark and long -31

Albino and short- 29

Albino and long-11

  • a. AaLl

  • b. AALL

  • c. AaLL

  • . AAll

If fruit weight in a plant was measured and following categories were obtained- 25g;30g;35g;40g;45g;50g;55g.Then, how many genes are involved for controlling fruit weight?

  • a. 2

  • b. 3

  • c. 5

  • . 7

If a character is controlled by 5 alleles, what will be the number of genotype in this case?

  • 12
  • 18
  • 30
  • 15

What phenotypic ratio will be there when selfing of a trihybrid is performed in which two gene pairs are completely dominant and one gene pair is codominant?

  • 3:9:1:2:1:3
  • 27:9:3:1:3:3:1
  • 9:3:3:1:18:6:6:2:9:3:3:1
  • 18:6:6:2:1:2:1:2:1

If dihybrid mulatto male (AaBb) is crossed with white female(aabb), then the ratio of mulatto and white offspring will be-

  • 1:6
  • 1:1
  • 4:1
  • 2:1

In a test cross of F1 generation, having a genotype AaBb, following progeny were obtained

AaBb- 450

aabb – 450

Aabb- 50

aaBb- 50

How far in centimorgans are the a and b genes?

  • a.100

  • b.90

  • c.10

  • .1

The distance between gene A, B, C and D on a chromosome is as follows:

A and C - 18 units

A and B - 26 units

A and D - 40 units

B and C - 8 units

B and D – 14 units

The sequence of these genes would be-

  • BCD
  • ACD
  • ADB
  • ACB

Which of the following is an autosomal recessive blood disease?

  • Phenylketonuri
  • Thalassemia
  • Haemophilia
  • Muscular ystrophy

Which of the following are correct with respect to Thalassemia?

  • An utosomal dominant disorder
  • Defect due to mutation or deletion
  • Parents will be homozygous for thalassemia
  • Occurs ue to vitamin deficiency

Read the following statements with respect to Thalassemia and find the wrong one.

  • Quntitative disorder
  • Different forms of Thalassemia are oserved
  • Anaemia is not a haracteristic feature of this disease
  • Defect ue to mutation and deletion

How sickle cell anaemia is different from Thalassemia?

  • Being autosomal recessive

  • Being a blood disease

  • Being a qualitative disorder

  • Involvement of mutation

The basis of Thalassemia classification can be-

  • Which parent is affected

  • Which chain of haemoglobin molecule is affected

  • How much a chain is affected

  • Which gender is showing the disease

Alpha Thalassemia is controlled by ------- on chromosome number----

  • Linked gene, 11

  • Linked gene, 16

  • Unlinked gene, 11

  • Unlinked gene, 16

Which of the following statements is wrong with respect to beta Thalassemia?

    1. Controlled by a single gene.
    2. Gene involved is HBA1
    3. Gene involved is present on chromosome number 11
    4. Occurs due to mutation
  • 1
  • 2
  • 3
  • 4

The genes which are involved in alpha Thalassemia are---- and ----- while in beta thalassemia are----.

  • HBA1, HBB, HBA2

  • HBB1 HBB2 HBA

  • HBB1 HBA HBB2

  • HBA1 HBA2 HBB

Find the correct match-

    1. Alpha Thalassemia- 11th chromosome
    2. Beta chromosome- 16th chromosome’
    3. Alpha Thalassemia- linked genes
    4. Thalassemia- Qualitative trait
  • 1
  • 2
  • 3
  • 4

If Ram has a brother Shyam suffering from Cystic Fibrosis, what is the probability of Ram being a carrier as his parents are normal?

  • a.1/4

  • b. ½

  • c.2/3

  • .3/4

Which of the four couples claiming the baby O positive blood type are possible biological parents of it?

  • a. B- and O-

  • b. O+ and AB+

  • c. AB+ and AB-

  • .A+ and O-

If two people who are carrier for a genetically inherited fatal recessive disease decide to marry and disease cause still birth. What is the probability of the live children to be a carrier?

  • a.1/2

  • b.2/3

  • c.1/4

  • .1/3

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