This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Heredity and Variation Set 5
Q1 | Test cross in plants or in Drosophilia involves crossing AIPMT - 2011
between two genotype with recessive trait
between two F1 hybrids
the F1 hybrid with a double recessive genotype
between two genotypes with dominant traits
Answer: the F1 hybrid with a double recessive genotype
Q2 | Which one of the following conditions of the Zygotic cell would lead to the birth of a normal human female child? AIPMT - 2011
Two X Chromosomes
Only One Y Chromosomes
Only One X Chromosomes
One X chromosome and One Y chromosome
Answer: Two X Chromosomes
Q3 | F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1 . It represents in case of AIPMT - 2012
Co - Dominance
Monohybrid cross with complete dominance
Monohybrid cross with incomplete dominance
Answer: Monohybrid cross with incomplete dominance
Q4 | A normal - Visioned man whose father was colourblind, marries a woman whose father was also colourblind. They have their first child as a daughter. What are the chances that this child would be colourblind?
Q5 | A test cross is carried out to AIPMT - 2012
determine the genotype of a plant at F1
Predict whether two traits are linked
assess the number of alleles of a gene
determine whether two species or varieties will breed successfully.
Answer: determine the genotype of a plant at F1
Q6 | Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?
Q7 | A cross between AaBB X aaBB yields a genotypic ratio of AIPMT - 1990
1 AaBB : 1 aaBB
I AaBB : 3aaBB
3 AaBB : 1 aaBB
Answer: 1 AaBB : 1 aaBB
Q8 | Which of the following is non - heritable? AIPMT - 1995
Answer: Point mutation
Q9 | Dihybrid cross proves the law of AIPMT - 1992
Purity of gametes
Answer: Independent assortment
Q10 | In a dihybrid cross between AABB and aabb the ratio of AABB, AABb, aaBb, aabb in F2 generation is
9 : 3 : 3: 1
1: 1: 1: 1
1: 2: 2: 1
1 : 1 : 2 : 2
Answer: 1: 2: 2: 1
Q11 | The allele which is unable to express its effect in the presence of another is called AIPMT - 1991
Co - dominant
Q12 | Which person is suffering from disease according to given sentences ?
Mahesh walks slowly & become tired.
There is appearance of scaly lesions on skin of naresh.
Paresh is suffering from vomiting.
All of them suffer from disease.
Answer: All of them suffer from disease.
Q13 | What is the location of Salmonella typhi during diseased condition ?
Q14 | Which test is carried out if disease is occured by salmonella typhi ?
Answer: Widal test
Q15 | Generally streptococcus pneumoniae causes pneumonia but which bacteria is responsible for this diseare ?
Answer: Haemophilus influenzae
Q16 | Chhaganbhai is suffering from fever, then which kind of organism responsible for it ?
All of hte given.
Answer: Plasmodium falciparum
Q17 | Duration of fever occured by plasmodium malarie is _______
Every 24 hours.
Every 48 hours.
Every 36 hours.
Every 72 hours.
Answer: Every 72 hours.
Q18 | From which kind of host life cycle of plasmodium passes ?
Male of Human & of Anopheles mosquito.
Male of Human & Male of Anopheles mosquito.
Human & Female Anopheles mosquito.
Human & Male Anopheles mosquito.
Answer: Human & Male Anopheles mosquito.
Q19 | What is responsible for malaria...?
All Anopheles mosquitoes.
All Culex mosquitoes.
Only male Anopheles mosquitoes
Only female Anopheles mosquitoes
Answer: Only female Anopheles mosquitoes
Q20 | The spherical from of metacryptomezoites is called _____
Q21 | What is improper for ringworm disease.
It is done by Trichophyton fungi.
By constant itching the lesions get expanded
It is done by using infected persons comb.
It is done by secretion of serotonin chemical.
Answer: It is done by secretion of serotonin chemical.
Q22 | In figure what is indicated by "P" ?
Answer: Disuphlide bond
Q23 | Give the name of scientist who are concern with interferon word.
Watson & Crick
Luis pasteur & Stemberg
Ellic isaks & jan lindenmen
Answer: Ellic isaks & jan lindenmen
Q24 | At Which time interferon is secreted ?
When antibody reacts with antigen in our body.
When serotonin become active
When lymphocytes become active
When our body cell's are infected by virus then that cell's secret this chemical.
Answer: When our body cell's are infected by virus then that cell's secret this chemical.
Q25 | Which is the process of biological control,which is for controlling to spread the diseare caused by mosquitoes.?