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Why do you think that relatively few fetuses with chromosomal trisomies survive birth?
Relatively few fetuses with chromosomal trisomies survive birth primarily due to the severe developmental issues and health complications associated with these conditions. Many trisomies, such as trisomy 18 and trisomy 13, result in significant organ malformations and other life-threatening anomalies that make survival outside the womb unlikely. Additionally, the body's natural mechanisms often lead to miscarriage early in pregnancy when serious chromosomal abnormalities are detected. As a result, only a small percentage of affected fetuses reach full term and survive to birth.
What else can I help you with?
Who concludes that relatively constant internal environment allows organisms to survive under varying conditions?
The concept that a relatively constant internal environment allows organisms to survive under varying external conditions is concluded by the field of physiology, particularly through the work of scientists like Claude Bernard and Walter Cannon. Bernard introduced the idea of "milieu intérieur" (internal environment), while Cannon later coined the term "homeostasis" to describe the mechanisms that maintain this stability. Together, their contributions highlight the importance of physiological regulation in enabling survival amidst changing conditions.
What is the metabolism of a platypus?
The metabolism of a platypus is considered to be relatively low compared to other mammals of similar size. This is likely an adaptation to conserve energy as platypuses have a slow metabolic rate to help them survive in their aquatic environment and during their extended periods of rest.
Can xerophyte survive in mesophytic condition?
Yes, these can survive but it is difficult for mesophytes to survive in xerophytic conditions.
What survives impacting the earths surface?
Large objects like meteorites, asteroids, and comets have the potential to survive impacting the Earth's surface. Depending on their size, composition, and speed, these objects can withstand the heat and pressure of entering the Earth's atmosphere and make it to the surface relatively intact.
How do unicellular organisms survive?
how unicellular organism survive
Why do more female fetuses survive than male?
The Male fight more.
Can a fetus survive unborn for years?
no. Eggs can be frozen but fetuses have to emerge as living babies or die trying.
Can silki eggs have twins?
I'm sure it may be possible to have twins at the time of feritilzation, but it is highly unlikely that two fetuses would survive in the same egg.
Can a person with 45 or 48 chromosomes survive?
Someone with 45 chromosomes can survive if the missing chromosome is a sex chromosome. 48 chromosomes would be 2 trisomies...if one was a trisomy of chromosome 21 and the other trisomy involved one of the sex chromosomes this would probably produce a living offspring. Other trisomies tend to have more negative effects and it is unlikely that multiple trisomic individuals would survive.
If an organism is to survive the conditions within its body fluids must remain relatively what?
Stable
What is the male version of Rett syndrome called?
Rett syndrome in boys is known as Rett syndrome. Male fetuses with Rett syndrome do not typically survive until birth unless they have an extra X chromosome (XXY).
Can deer survive by drinking salt water?
No derr need fresh water to survive they are like people they need freshwater That's not fully true a deer can survive water up to a relatively low saline content, just as humans can tolerate
How long can humans survive with low oxygen saturation?
Depends on how low you are talking. Yes some people can survive with relatively low oxygen saturations, by compensating in other ways (ie increase the number of red blood cells).
How many convicts didn't survive the First Fleet?
It seems that they they did relatively well on the First Fleet. However the same can not be said for the many convicts transported to Australia after that.
How long can the virus survive in the air?
This will depend heavily on the virus you are asking about - the influenza virus is relatively hardy while the HIV virus is destroyed pretty quick.
Can coral reefs live at the bottom of the ocean?
It depends on how deep the bottom is. Coral can only survive in relatively shallow water, so most of the ocean floor is coral free.
Why are tertiary consumers rare?
why are there relatively few third-level consumers in an ecosystem?why are there fewer 3rd level consumers in an ecosystem?
