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What else can I help you with?
Why do males have nipples from an evolutionary perspective?
Males have nipples from an evolutionary perspective because nipples develop in embryos before the sex of the individual is determined. In mammals, including humans, nipples are a common feature that develops in all embryos, regardless of their eventual sex. This is because nipples are essential for feeding newborns, and it is more efficient for evolution to maintain nipples in both males and females rather than developing a separate system for males.
Do embryo's think?
Embryos do not think in the way that more developed brains do, as they lack the necessary neural structures and cognitive functions. During the early stages of development, the brain is not fully formed, and consciousness or thought processes as we understand them do not occur. While embryos can respond to stimuli, this is a reflexive response rather than a conscious thought. Thus, the concept of thinking is not applicable to embryos.
Do trout have a placenta?
No, trout do not have a placenta. They are oviparous, meaning they lay eggs rather than giving live birth, and the embryos develop outside the mother's body. Trout typically spawn in freshwater, where the female lays eggs that are fertilized by the male, and the developing fish rely on the yolk sac for nourishment until they hatch.
How do animals develop without a placenta?
Animals that do not develop in a placenta will develop outside of the uterus rather than in. Kangaroos and Koalas use pouches to develop their young.
Embryo excretes nitrogenous wastes into it?
Embryos do not excrete nitrogenous wastes into the environment but rather rely on the mother's body to remove these wastes through the placenta. The mother's kidneys process the nitrogenous wastes from the embryo's blood and excrete them into her own bloodstream for elimination.
What describes an appearance of red muscular tissue emerging directly from bone rather than being separated from it by an obvious tendon?
Insertion
Do baby macaws grow inside their mothers body before they were born?
Yes, baby macaws develop inside their mother's body before birth. Like all birds, macaws are oviparous, meaning they lay eggs rather than giving live birth. The eggs are fertilized internally, and the embryos develop within the eggs outside the mother's body until they hatch. Once hatched, the baby macaws are cared for by their parents until they are ready to fledge.
Do stingray give milke to live young?
No, stingrays do not give milk to live young. Instead, they are ovoviviparous, meaning that the embryos develop inside eggs that hatch within the mother's body, leading to live birth. The young stingrays receive nutrients from the yolk sac during their development, rather than from milk. Once born, they are independent and start feeding on their own.
Do catfish have a placenta?
No, catfish do not have a placenta. They are oviparous, meaning they lay eggs rather than giving live birth. Catfish fertilize their eggs externally, and the developing embryos receive nutrients from the yolk within the eggs rather than through a placental connection as seen in mammals.
In a persuasive essay develop your argument?
Type your answer here... with specifics rather than generalizations.
Which type of stem cell is less controversal?
Adult stem cells are much less controversial. This is because they do not involve embryos at all. However, adult stem cells cannot differentiate into as many different types of cells as the embryonic stem cell (which can become any type).
Why did develop as a group of individual city states rather than a unified states?
Because of its geography.
