If normal parents have an albino, what is the probability that their next child will be normal?
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?
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?
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?
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?
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?
If dihybrid mulatto male (AaBb) is crossed with white female(aabb), then the ratio of mulatto and white offspring will be-
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-
Which of the following is an autosomal recessive blood disease?
Which of the following are correct with respect to Thalassemia?
Read the following statements with respect to Thalassemia and find the wrong one.
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?
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-
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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