The process of fertilization in living entities requires the presence of both the male and female gametes. If the pollen grains are not made... View Article
Through the process of meiosis, pollen is formed in the pollen sacs (microsporangia) inside the anthers of a flower. The anther, while it is... View Article
Pollen grains are male gametophytes and are produced by microsporogenesis. The diploid pollen mother cells in the microsporangium divide by... View Article
Okazaki fragments are short DNA nucleotide sequences. These are discontinuously synthesized and further associated by the ligase enzyme in order... View Article
Yes, grass is a flowering plant. This conveys that grasses are primarily self-pollinated and wind pollinated. They are rarely pollinated by... View Article
The implantation, or attaching of embryos into the lining of the uterus takes place 6-10 days after fertilization. In the following week, the... View Article
Embryo transfer is the last step in the IVF (in vitro fertilization) process. In this process of assisted reproduction, embryos are transferred... View Article
On a specific nutrient medium, it is a technique to cultivate an embryo in an aseptic environment for its optimal growth. The embryo thus... View Article
Two male gametes. Two male gametes are produced from a single pollen grain in flowering plants. Pollen grains released from pollen-sacs at the... View Article
In Vallisneria, pollination occurs through the mode of water. Hence, pollen grains are wrapped by mucilaginous coating to protect pollen from... View Article
Parthenocarpy is the process of development of fruit in the absence of any prior fertilization. Banana produces fruits as it is seedless, it is... View Article
Some reasons why an embryo fails to implant itself are - endometriosis, immature egg, resistance offered by progesterone, chronic endometritis,... View Article
Since only one parent is involved in asexual reproduction, the offspring produced is genetically identical to the parent cell. Since they are... View Article
Insects pollinate flowers when they go in search of food. Flowers produce a sugary liquid called nectar which many insects consume. Upon landing... View Article
The embryo in humans starts to take form after four days of fertilization. Initially, the solid ball of cells, a tiny mass forms - the zygote.... View Article
The presence of sporopollenin causes them to be well-preserved. Pollen grains have an evident two-layered wall wherein exine is the exterior hard... View Article
It is because pollination in maize is by wind (Anemophilous). Hence, they are produced in larger quantities to ensure pollination. Explore this... View Article
The answer is plasmids. Plasmids are extra chromosomal, autonomously replicating circular, double-stranded DNA molecules. They naturally occur... View Article
Most likely, embryos are frozen five or six or seven days after the retrieval of the egg. In some other events, this process can take 3-4 weeks... View Article
Pollen allergy affects the mucous membrane of the eyes, nose etc. It is an allergic reaction that is typically characterized by nasal congestion,... View Article
