Parthenogenesis is common ina)Lizardb)beesc)dogsd)frogsCorrect answer ...
In the honey bee, fertilized eggs (diploid zygotes) regularly develop into females, and unfertilized eggs (haploid gametes) develop into males by types of reproduction known as zygogenesis and generative or haploid Parthenogenesis, respectively.
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Parthenogenesis is common ina)Lizardb)beesc)dogsd)frogsCorrect answer ...
Parthenogenesis is a form of asexual reproduction in which an organism can produce offspring without the need for fertilization. It is a relatively rare phenomenon in the animal kingdom, but it does occur in some species. In this case, the correct answer is option 'B', bees.
1. Parthenogenesis in Bees:
- Bees are social insects that live in colonies. The colony consists of a queen, drones (males), and worker bees (females).
- The queen bee is the only member of the colony that is capable of reproducing. She can lay fertilized eggs, which develop into female worker bees, or unfertilized eggs, which develop into male drones.
- However, under certain circumstances, such as the loss of the queen or absence of mating partners, worker bees can lay unfertilized eggs that develop into male drones through a process called parthenogenesis.
- This process occurs when the worker bee's egg undergoes a process called automixis, in which the chromosomes within the egg recombine to produce a viable embryo without the need for fertilization.
- The resulting drone is haploid, meaning it has half the number of chromosomes compared to the queen or worker bees. These drones are unable to mate and can only contribute to the genetic diversity of the colony through their sister's offspring.
2. Parthenogenesis in Other Species:
- While parthenogenesis is not common in other species listed in the options (lizard, dogs, frogs), it does occur in some reptiles, amphibians, and insects.
- For example, some species of lizards, such as the New Mexico whiptail lizard, can reproduce through parthenogenesis. They are all-female species that produce offspring that are genetic clones of themselves.
- In frogs, parthenogenesis has also been observed in a few species, although it is less common. It typically occurs in situations where males are absent or rare.
- In dogs, parthenogenesis has been documented in laboratory settings, but it has not been observed in natural populations.
In conclusion, while parthenogenesis is relatively rare in the animal kingdom, it does occur in some species. Bees are one example of an organism capable of reproducing through parthenogenesis.
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