MCQ
Sex determination in Drosophila melanogaster is based on
- A$X-Y$ chromosome mechanism
- ✓Genetic balance between the $X$-chromosome and autosomes
- CChromosome -environment interaction
- DPseudoalleles.
✓
Answer
Correct option: B.
Genetic balance between the $X$-chromosome and autosomes
b
It's Obvious
It's Obvious
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Open circulatory system is present in
Statement I: Parasympathetic neural signals increase the heart rate while sympathetic neural signals decrease the heart rate.
Statement II: Adrenal medullary hormones can increse the cardiac output.
Statement II: Adrenal medullary hormones can increse the cardiac output.
Assertion : Females have less stature than males after puberty.
→Reason : This happens because of the presence of $hCG$ in the blood of females.
Dendrites are
For visual sense, the nerve impulse is generated by
Identify Figure :
The thymus is a lobed organ located near the $...A...$ and beneath the $...B... $ The most appropriate combination for $\mathrm{A}$ and $\mathrm{B}$ is
→The cross used to ascertain whether the plant is homozygous or heterozygous is
Assertion : Mast cells in the human body release excessive amounts of inflammatory chemicals, which cause allergic reactions.
Reason : Allergens in the environment on reaching human body stimulate mast cells in certain individuals.
There are three genes $a,\,b,\,c$. Percentage of crossing over between $a$ and $b$ is $20\%$, $b$ and $c$ is $28\%$ and $a$ and $c$ is $8\%$. What is the sequence of genes on chromosome ?
→