Directional selection is a type of natural selection that favors one extreme phenotype over the mean or another extreme. Examples of directional selection include giraffes that have long necks and the darkening of London's peppered moths after the Industrial Revolution.
Stabilizing selection, also known as purifying selection, is a type of natural selection in which genetic diversity decreases as the population stabilizes on a particular trait value. An example of stabilizing selection is birth weigh in humans.
Disruptive selection is a type of natural selection that shows a preference toward the reproduction of genetic material at the extremes within a population.One of the most studied examples of disruptive selection is the case of London's peppered moths.
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Slime molds would be a fungus-like protist. They usually use psuedopods to move around.
In the spermatheca, females of many insect species, including honeybee queens, can store gametes secreted by their sex partners.
<h3>What is Spermatheca ?</h3>
The female insect's spermatheca is an ectodermal structure that receives, stores, and releases sperm for egg fertilization. According to the species, spermathecae differ in size and shape.
- They often come from the median oviduct, which is located close or on the genital chamber. A secretory duct called the ductus seminalis connects the spermathecal sac, also known as the receptaculum seminis, to the genital chamber, where the sperm are released.
- The number of spermathecas varies among taxa, however the majority of insects only have one. Depending on the species of insect, the spermatheca has different morphologies. The spermatheca is composed of the spermathecal gland, duct, and reservoir. Both of these fluids feed the sperm. Both the spermathecal glands and the male accessory glands secrete substances that feed the sperm.
So lastly we can say that, t females of many insect species, including honeybee queens, can store gametes shed by their mating partners in - the spermatheca.
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मैं इसे थोड़ा कुछ हटके तुम्हें बता रही हूं फूड चेन में क्या होता है कि ना जैसे इसमें तुमने फूड वेब के बारे में पूछा है मैं तुम्हें फूड चेन के बारे में बता रही हूं यह इकोसिस्टम का ही एक पाठ होता है तू ट्रेन में जैसे बेस्ट एग्जांपल है कि घास घास खाता है ग्रास है पर को फ्रॉक खाता है फ्रॉक को उसने खाता में कोई गर्ल खाता है जल के बाद वह जो भी चीज खाता है ना तो वह सब चीजें नाड़ी कंपोज हो जाती हैं पूर्व में क्या होता है इंटरकनेक्शन रहता है कुछ चीजों में और जो तुमने डायग्राम भेजा है वह डायग्राम एनसीईआरटी बुक में है क्लास 8 की तो यू कैन डू फॉर द डायग्राम एंड और उसे देखने के बाद अच्छा लगे तो follow us
