CBSE 2025 · Region 6 · Set 1 · Q24 · 3 marks
Answer the following questions with respect to the sex determining mechanism observed in honey bee.(a)Name the type of sex determination system observed in honey bee.(b)Fill in the blanks (i), (ii) and (iii) in the given question. Parent Male \begin{tabular}{l} \begin{itemize} \item[-] Type of cell division involved during gamete formation in males \item[-] Number of chromosomes in the gametes \item[-] Number of chromosomes in the diploid cell of the progeny \end{itemize}
& (i) $\displaystyle \_\_\_\_$ (ii) $\displaystyle \_\_\_\_$ (iii) $\displaystyle \_\_\_\_$
\hline \end{tabular}(c)What will be the sex and chromosome number of the progeny formed from the unfertilised eggs of honey bee ?
Answer the following questions with respect to the sex determining mechanism observed in honey bee.
(a)
Name the type of sex determination system observed in honey bee.
(b)
Fill in the blanks (i), (ii) and (iii) in the given question.
&
\hline \end{tabular}
| Parent | Male |
| \begin{tabular}{l} \begin{itemize} \item[-] Type of cell division involved during gamete formation in males \item[-] Number of chromosomes in the gametes \item[-] Number of chromosomes in the diploid cell of the progeny \end{itemize} |
| (i) $\displaystyle \_\_\_\_$ |
| (ii) $\displaystyle \_\_\_\_$ |
| (iii) $\displaystyle \_\_\_\_$ |
(c)
What will be the sex and chromosome number of the progeny formed from the unfertilised eggs of honey bee ?
Marking-scheme solution
(a)
Haplo-diploid sex determination mechanism
(i)
Mitosis
(ii)
$\displaystyle 16$
(iii)
$\displaystyle 32$
(c)
Sex: Male
Chromosome Number: $\displaystyle 16$
Principles of Inheritance and VariationSex DeterminationApplyshort_answermedium
Practice Principles of Inheritance and Variation →All Principles of Inheritance and Variation questions
More from Principles of Inheritance and Variation
- Using a Punnett square workout the distribution of an autosomal phenotypic feature in the first filial…2025 · asked 3×
- By using Punnett square depict the genotypes and phenotypes of test crosses (where green pod colour (G) is…2023 · asked 3×
- Assertion: In dihybrid crosses involving sex-linked genes in Drosophila generation of non-parental gene…2025 · asked 3×
- The following pedigree chart shows the inheritance of a genetic disorder up to three generations of a family.…2023 · asked 3×
- Write the types and locations of the genes causing thalassemia in humans. State the cause and symptoms of the…2026 · asked 3×
- A person with trisomy of 21^ st chromosome shows (i) Furrowed tongue (ii) Characteristic palm crease (iii)…2024 · asked 3×
- The chromosome number is fixed for all normal organisms leading to species specification whereas any…2023 · asked 3×
- A student performed some crosses in plants and represented the result in the form of bar graphs as shown…2026 · asked 3×
CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.