Understanding Sex Determination by Temperature
Temperature-dependent sex determination (TSD) is a biological process where the incubation temperature of eggs influences the sex of the developing offspring. This phenomenon is observed in various animal groups.
Identifying Organisms with TSD
Let's examine the provided options:
- Some reptiles: This group famously includes species like turtles, crocodiles, and many lizards, where specific incubation temperature ranges produce males, while others produce females.
- All birds: Sex determination in birds is primarily governed by sex chromosomes (Z and W chromosomes), not environmental temperature.
- Humans: Human sex is determined by sex chromosomes (XX for females, XY for males) and is not influenced by temperature.
- All fish: While TSD occurs in a few fish species, it is not a universal trait across all fish; many rely on genetic or chromosomal factors.
Conclusion on TSD
Based on biological principles, some reptiles are the group where environmental temperature plays a crucial role in determining the sex of the individuals.
Important Questions from Biology
Which of the following statements about living and non-living being is/are correct?
1. While living being can demonstrate growth and repair, non-living being cannot.
2. While living being demonstrates metabolic processes, non-living being does not.
Select the correct answer using the code given below.Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?
Transformation of meristematic cells into specific permanent tissues occurs by the process of
