Gentics And Evoloution — Part 2 MCQs with Explanations

a-2, b-4, c-3, d-1 is the correct answer to “Match List-I with List-II and select the correct answer: List-I List-II a. Oenothera lamarckiana 1. Autoallohexaploid b. North American cotton plant 2. Autotetraploid c. Triticum vulgare 3. Allohexapioid d. Solanum nigrum 4. Allotetraploid”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Test cross is the correct answer to “A cross between heterozygous F 1 hybrid and the double recessive homozygous is known as”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

A. L. Herrare is the correct answer to “Who among the following synthesized sulphobes from ammonium thiocyanate and formalin and also reported the formation of two amino acids and a condensation product plus pigments”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

2n + 1 is the correct answer to “Trisomy stands for”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

two is the correct answer to “The number of DNA molecules per chromatids are”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Orgel is the correct answer to “Recently, who among the following succeeded in synthesising a nucleic acid molecule of six nucleotide units”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

universe is the correct answer to “Big-Bang theory attempts to explain the origin of”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

a-3, b-1, c-4, d-2 is the correct answer to “Match List-I with List-II and select the correct answer: List-I List-II a. Monohybrid cross 1. Involves the study of inheritance of two pairs of contrasting characters b. Dihybrid cross 2. Involves two crosses concerning the same character but with reversed sexes c. Polyhybrid cross 3. Involves the study of inheritance of one pair of contrasting characters d. Reciprocal cross 4. Includes those crosses in which inheritance of more than two pairs of genes is concerned”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Concept of organization is the correct answer to “Which of the following suggests that at every level from the molecule through the supramolecular organelle, the cell, the tissue, the organism, the individualand upto the population or the society, the properties of life depend only to a small degree upon the substances of which living matter is composed”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Salamander - Python - Kangaroo is the correct answer to “With reference to the evolution of living organism, which one of the following sequence is correct”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Biophores is the correct answer to “Neo-Darwinians believed that characters are not inherited as such but there are character determiners which control only the development called”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Adenine, ribose and phosphoric acid is the correct answer to “Ponnamperurna (1965) demonstrated the production of adenosine by heating dilute aqueous solutions of”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Only 1, 3 and 4 are true is the correct answer to “Consider the following statements regarding evolution and choose the correct answer: 1. Basically, evolution is the result of the differential survival in each generation of the progeny of the individuals with certain special characteristics 2. The organization of genes in chromosomes and the behaviour of these during cell division do not affect the mechanisms of evolution 3. Due to sexual reproduction there is a tremendous increase in variability 4. Differential survival is always partly due to capacity to adopt to the physical environment”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

None of the above is the correct answer to “Consider the following statements. 1. Human beings have 23 pairs of chromosomes. 2. Sex chromosome in human male are named XY. 3. Chromosomes are best seen in metaphase. Which of the statements given above is/are false about chromosomes”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

All of the above is the correct answer to “The most commonly used methods for mapping viral chromosomes utilise”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Cro-Magnon man is the correct answer to “Latest ancestor of modern human is”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

UV rays is the correct answer to “Thymidine dimer formation in DNA is caused by”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

EF - Tu and EF - Ts is the correct answer to “In prokaryotes, which elongation factors are required for binding the aminoacyl tRNA to the ribosome”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

clawed wings, teeth on jaw, tail is the correct answer to “Archaeopteryx had the following reptilian characters”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Programmed ribosome is the correct answer to “During the formation of initiation complex the mRNA attaches to the 30 S subunit of ribosome which is then called”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

1, 2, 3 and 4 are true is the correct answer to “Consider the following statements regarding the advantages of embryo culture and choose the correct answer: 1. It is the excellent method for understanding the nutritive requirements of the developing embryo 2. Embryo culture gives an insight into the factors which influence embryonic differentiation 3. It promises to be of great economic value as a means of achieving a much wider range of hybrid plants 4. Seeds, which normally remain dormant, can be made to germinate immediately by the help of embryo culture technique”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

46 is the correct answer to “The number of chromosomes present in normal human being are”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Only 1, 2 and 4 are true is the correct answer to “Consider the following statements and choose the correct answer: 1. Since chromosomal aberrations result in a change in the organism, they are also called chromosomal mutation 2. Chromosomal aberrations are of four types deletion, duplication, inversion and translocation 3. If a single break occurs near the end of a chromosome, it results in an intercalary deletion 4. A deficiency involves loss of a chromosome section”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

DNA wrapped around histones is the correct answer to “The nucleosome is”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

a-2, b-1, c-3 is the correct answer to “Match List-I with List-II and select the correct answer: List-I List-II a. The Cairns model 1. The newly formed DNA strands become covalently joined to the ends of the parental chromosomes b. The Yoshikawa model 2. Replication begins by denaturation of the DNA double strands at a specific site called origin c. The rolling circle model 3. The chromosome first becomes double stranded by the synthesis of a negative strand”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Either A or B is the correct answer to “Transversion occurs when”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

1, 2 and 3 are correct is the correct answer to “Consider the following statements regarding the laws of evolution from Lamarck's thesis and choose the correct answer: 1. The internal forces of life tend to increase the size of an organism not only as a whole but in every part as well 2. Each organ or part is the outcome of the new movement which in turn is initiated by a new and continuous need or want 3. All that has been acquired by an individual organism during its lifetime is transmitted by heredity to its offsprings in the next generation”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

inheritance of acquired characters is the correct answer to “The present giraffe has a long neck as compared to its ancestors. Lamarck believed it could be due to”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Transcription is the correct answer to “During RNA primer formation which of the following processes takes place”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

There is more chance of pairing with a wrong base is the correct answer to “If during DNA replication the base is in an enol form, which of the following would be correct”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

the study of history of life forms on earth is the correct answer to “Evolutionary biology is”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Unequal segregation of chromosomes is the correct answer to “Sterility in autopolyploids is usually due to”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

there are an equal number from each parent is the correct answer to “Of the total number of genes inherited by a child”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Constant temperature with low light intensity is the correct answer to “Plant tissue cultures generally grow best at”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Does not specify any amino acid is the correct answer to “A nonsense code”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Equal to the total number of pyrimidines is the correct answer to “Because of the purine-pyrimidine pairing the total number of purines in a double stranded DNA molecule is”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Complete linkage is the correct answer to “Such cases in which linked genes are transmitted together to the offsprings only in their original or parental combination for two or more or several generations exhibit”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

5-membered imidazole ring is the correct answer to “A purine molecule consists of which of the following joined to a pyrimidine ring at positions 4' and 5'”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Monopolar seedling formation is the correct answer to “The entire seedling formed by the activity of the plumular pole of the embryo is through the process of”. This question is standard in competitive examination syllabi for Gentics And Evoloution.

Theory of pseudoallelism is the correct answer to “According to which of the following theories, multiple alleles do not represent gene mutations at a given locus but they occupy different loci which lie in close association in a chromosome”. This question is standard in competitive examination syllabi for Gentics And Evoloution.