Animal Biotechnology Chromosomes

Question: In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters) will show a phenotypic ratio of
[A].

1:1:1:1

[B].

1:2:2:1

[C].

9:3:3:1

[D].

3:1:1:3

Answer: Option A

Explanation:

No answer description available for this question.

Question: Transmission of a gene from male parent to female child to male grand child is known as
[A].

holandric inheritance

[B].

quantitative inheritance

[C].

criss-cross inheritance

[D].

maternal inheritance

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following is correct when a character shows continuous variation assuming a normal distribution?
[A].

It is governed by many genes with small cumulative effect

[B].

It is not controlled genetically

[C].

Many of the variation is due to fluctuation of climate

[D].

None of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: If two genes show 50% recombination
[A].

they are on different chromosomes

[B].

they are on same chromosome but far apart

[C].

both (a) and (b)

[D].

they are closely located on the same chromosome

Answer: Option C

Explanation:

No answer description available for this question.

Question: Diethyl stilbestrol (DES), a synthetic estrogen causes
[A].

chromosome lagging

[B].

disruption of mitotic spindle

[C].

centriole elongation

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Question: A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as
[A].

a physical map

[B].

a genetic map

[C].

a cloning map

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following denotes a pair of contrasting characters?
[A].

Alleles

[B].

Phenotype

[C].

Homozygous

[D].

Genotype

Answer: Option A

Explanation:

No answer description available for this question.

Question: In an organism, the chromosome number is maintained constant because of
[A].

independent assortment

[B].

crossing over

[C].

DNA duplication

[D].

synapsis

Answer: Option C

Explanation:

No answer description available for this question.