List of top Zoology Questions on Genetics

Choose the odd pair
Consider the following statements
Assertion (A): Skin colour in human beings is a polygenic trait.
Reason (R): Human skin colour is controlled by cumulative effect of genes.
The correct answer is
Karyotype of Turner's syndrome is
If a colour blind man marries a carrier woman for colour blindness, chances of their children to become colour blind is
How many different type of gametes can potentially be produced by an organism with the genotype aaBbccdd?
What is the difference between gynandromorphs and intersexes in {Drosophila?}
Match LIST-I with LIST-II
\begin{tabularx}{0.9\textwidth}{|l|X|l|X|} \hline \multicolumn{2}{|c|}{LIST-I} & \multicolumn{2}{c|}{LIST-II}
\multicolumn{2}{|c|}{Law/Principle/Gene interaction} & \multicolumn{2}{c|}{Genes distribution/Ratio}
\hline A. & Law of segregation & I. & 12:3:1
B. & Principle of independent assortment & II. & Genes are distributed without mixing.
C. & Complementary gene interaction & III. & Genes on different chromosomes are distributed independently during meiosis.
D. & Dominant epistasis & IV. & 9:7
\hline \end{tabularx}
Choose the most appropriate answer from the options given below:
Which of the following statements are true?
A. When two or more genes co-exist on the same chromosome, they may violate the principle of independent assortment during meiosis.
B. Positive interference occurs when the presence of one chiasma increases the possibility of another chiasma occurring in the immediate vicinity.
C. The proportion of crossovers never exceeds 50%.
D. The Chi-square test can be used for segregation ratios and detection of linkage.
Choose the most appropriate answer from the options given below:
Based on the threshold range, at the X/A ratio of 0.67, the sex of {Drosophila will be:}
In a population under Hardy Weinberg Equilibrium, out of a total of 592 people, 44 people were affected by a rare autosomal recessive disorder whereas the rest of the population was normal. How many individuals in this population have the heterozygous and homozygous dominant genotypes for this trait?
Where is Satellite DNA located?