Genome

Q.

What is C-value paradox? Explain.

Q.

The fruit fly has 8 chromosomes (2n) in each cell. During interphase of mitosis, if the number of chromosomes at G1​ phase is 8, what would be the number of chromosomes after S phase?

1. 4

2. 8

3. 32

4. 16

Q. How many chromosomes are in each daughter cell in mitosis and meiosis respectively ?

Q.

What is ploidy?

Q.

What is terminalization?

Q.

What will be the gametic chromosome number of a cell if somatic cell have 40 chromosomes?

Q.

Does every cell contain the entire genome?

Q.

Are most of our DNA junk DNA?

Q.

Chromosomes are present inside the nucleus of cells. There are ___________ pairs of chromosomes found in human beings. A pair of corresponding chromosomes of the same size and shape is called a __________________ pair. In the pair both parents contribute one chromosome.

Haploid cells have only ______________ the chromosomes of diploid cells. If an organism has more than a pair of homologous chromosomes, the organism is said to be ______________________________. E.g.: ____________________________. The number of chromosomes varies from organisms to organisms.

Q.

What can a genome tell us?

Q. A cell has 24 chromosomes before cell division. How many chromosomes will be there in (I) one of the daughter cells resulting from mitotic division and (ii) one resulting from meiotic division?

Q.

Where is the genome located?

Q. is not a part of modern genetic engineering.

1. DNA profiling
2. DNA finger printing
3. X-Ray diffraction

Q.

What is cistron?

Q. Why is the human genome project called a mega project? [3 marks]

Q. How many genomes are present in a typical green plant cell?

1. Five
2. Three
3. Ten
4. Two

Q.

If a cell having 90 chromosomes underwent mitosis, how many chromosomes would be there in the resultant cells?

__

Q. Genome represents total number of genes in

1. A chromosome
2. Homologous chromosome pair
3. Haploid set of chromosomes
4. Diploid set of chromosomes

Q.

Non-functional DNA present in the genome of an organism is called __________

1. junk DNA

2. extra DNA

3. duplicate DNA

4. abnormal DNA

Q.

what are the diff. genes controlling the blood group?

Q. Write the unit term of chromosome

Q. The set of genes present in an organism _______.

Q. Frederick Sanger standardised the process of sequencing of genetic material in 1977.

1. True
2. False

Q.

Where is the genome located in human beings?

Q. Complete haploid set of chromosomes of a species is

1. Genome
2. Genotype
3. Allele
4. Genetic code

Q. The total number of nitrogenous bases in human genome is estimated to be about

1. 3 million
2. 35 million
3. 31 billion
4. 35 thousand

Q. DNA model was given by
(a) Watson and Crick
(b) Sutton and Boveri
(c) Balbiani and Darwin
(d) Waldeyer and Carison

Q.

The sum of genetic material present in an organism is known as_______

1. genome

2. chromosome

3. nucleotide

4. nucleoside

Q.

Diploid cells have:

1. Two chromosomes

2. One set of chromosomes

3. Two pairs of homologous chromosomes

4. Two sets of chromosomes

Q. The term genome refers to the total genes contained in a

1. Haploid set of chromosomes
2. Diploid set of chromosomes
3. Nucleus of a megasporocyte
4. Nucleus of a cell stem apex