ANIMAL BIOTECHNOLOGY CHROMOSOMES QUIZ

Raphanobrassica is a classical example of

aneuploidy

None of these

allopolyploidy

nullisomy

TRUE ANSWER : ?
YOUR ANSWER : ?

A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as

karyogram

chromogram

zymogram

idiogram

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following denotes a pair of contrasting characters?

Phenotype

Homozygous

Genotype

Alleles

TRUE ANSWER : ?
YOUR ANSWER : ?

If two genes show 50% recombination

they are on same chromosome but far apart

they are closely located on the same chromosome

both (a) and (b)

they are on different chromosomes

TRUE ANSWER : ?
YOUR ANSWER : ?

Hairy wing character of Drosophila is due to

duplication in region of chromosome

due to a point mutation

due to presence of additional X-chromosome

deletion in region of chromosome

TRUE ANSWER : ?
YOUR ANSWER : ?

Bar eye character of Drosophila is due to

deletion in region of 16A of X chromosome

duplication in region of 16A of X chromosome

due to a point mutation in eye-locus

due to presence of additional X-chromosome

TRUE ANSWER : ?
YOUR ANSWER : ?

A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as

a genetic map

a cloning map

none of these

a physical map

TRUE ANSWER : ?
YOUR ANSWER : ?

How does dosage compensation in Drosophila occur?

Hypertranscription of male X chromosome

X inactivation in females

Hypotranscription of female X chromosome

Chimerism

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is correct when a character shows continuous variation assuming a normal distribution?

It is not controlled genetically

None of these

It is governed by many genes with small cumulative effect

Many of the variation is due to fluctuation of climate

TRUE ANSWER : ?
YOUR ANSWER : ?

The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as

environmental influence

penetrance

expressivity

inheritance strength

TRUE ANSWER : ?
YOUR ANSWER : ?

↑