Gene Flow

Q.

How do you determine the order of genes on a chromosome?

Q.

Genetic drift is a change of

1. Gene frequency in same generation

2. Appearance of recessive genes

3. Gene frequency from one generation to next

4. None of the above

Q.

What is Genetic Drift and Gene Transfer?

Q. Select the statements that describe the characteristics of genes.

i. Genes are specific sequences of bases in a DNA molecule
ii. A gene does not code for a protein
iii. In individuals of a given species, a specific gene is located on a particular chromosome
iv. Each chromosome has only one gene.

1. i and ii
2. i and iii
3. i and iv
4. ii and iv

Q.

Explain the detailed concept of cloning using the example of Dolly.
[5 MARKS]

Q. A gene is a segment of DNA with a particular sequence of nucleotides.

1. True
2. False

Q.

What is genetic drift?

Q. we know that linkage between 2 genes decreases with increase in distance between them.then acoording to this if distance between A and B genes is large then crossing over will occur but some other gene would be linked to A or B near them.how does It actually occur

Q. If a trait X exists in 10% of the population of an asexually reproducing species and trait Y exists in 70% of the same population. Among X and Y which trait is likely to have arisen earlier.

1. Y
2. Both the traits have arisen simultaneously
3. X
4. None of the above

Q. Which of the following can act as a barrier to cause geographical isolation?

1. Seas, Rivers, Mountains
2. Only Mountains
3. Rivers, Human Beings, Animals
4. Only industries

Q.

Is genetic drift more pronounced in large or small populations?

Q. Gene flow between the two populations of beetles separated by the river is maximum.

1. True
2. False

Q. What is gene frequency and genetic drift??

Q.

Define genetic drift.

Q.

What are different ways in which individuals with a particular trait may increase in a population? [3 MARKS]

Q.

What is Genetic Drift and Gene Transfer? [2 MARKS]

Q.

A population of red colored beetles and green colored beetles thrive on the two opposite sides a river. Gene flow between the two populations of beetles separated by the river will be _____.

1. maximum
2. minimum
3. same
4. restricted

Q. Gene flow between the two populations of beetles separated by the river is maximum.

1. True
2. False

Q.

Is genetic drift random?

Q.

What is genetic drift and gene transfer?

Q.

What is Gene flow?

Q.

A population of red coloured beetles and green coloured beetles thrive on the two opposite sides of a river. Gene flow between the two populations of beetles separated by the river is__________.

1. Minimum

2. Maximum

3. None of these

4. Not possible

Q.

A population of red colored beetles and green colored beetles thrive on the two opposite sides a river. Gene flow between the two populations of beetles separated by the river will be _____.

1. maximum
2. minimum
3. same
4. restricted

Q. The factors responsible for species isolation are-

1. Gene flow
2. Genetic drift
3. Both (a) and (b)
4. Adaptation

Q.

What are different ways in which individuals with a particular trait may increase in a population?

Q.

What are different ways in which individuals with a particular trait may increase in a population? [3 MARKS]

Q. Mendelian factors or genes as well as chromosomes are present in_______.

1. Pairs
2. Singles
3. May be paired may be not
4. All of the above

Q. How many alleles of a gene can a gamete contain?

1. One
2. Two
3. Three
4. Many

Q. A gene is a segment of DNA with a particular sequence of nucleotides.

1. True
2. False

Q. Select the statements that describe the characteristics of genes.

i. Genes are specific sequences of bases in a DNA molecule
ii. A gene does not code for a protein
iii. In individuals of a given species, a specific gene is located on a particular chromosome
iv. Each chromosome has only one gene.

1. i and ii
2. i and iii
3. i and iv
4. ii and iv