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Which type of chromosomal abnormalities is most likely to be viable in humans?
Trisomy 21 (Down syndrome) is the most common type of chromosomal abnormality that is viable in humans. Individuals with Down syndrome have an extra copy of chromosome 21, which can result in distinctive physical characteristics and developmental delays, but many individuals with Down syndrome lead healthy and fulfilling lives.
Is a triploid chromosome viable in humans?
Triploid chromosome (69 total chromosomes instead of 46) is not viable in humans and typically results in miscarriage. It is considered a lethal condition due to the abnormal number of chromosomes, which disrupts normal genetic function and development.
What are Chromosomal Genetic Disorders?
Genetic anomalies where the normal compliment of chromosomes is either more or less than the expected value. In humans the most common trisomy occurs with chromosome 21 and results in Down Syndrome. Very few instances of fewer than a 2N chromosome count result in viable offspring although a child with a single X (sex chromosome) can reach term.
How could neanderthal and human interbreed to produce healthy viable offspring?
Neanderthals and humans were genetically similar enough to be able to produce viable offspring when interbreeding occurred. The hybrid offspring likely benefited from gene flow between the two populations, leading to increased genetic diversity. Additionally, the ability to interbreed indicates that Neanderthals and humans were closely related species.
Why do you think in humans there are no viable trisomies of chromosome 1?
they are lethal and cause spontaneous abortion of the embryo early in development.
What age are a woman's eggs no longer considered viable?
A woman's eggs are generally considered no longer viable by the age of 35 to 40, as fertility begins to decline significantly during this period. By age 40, the chances of conception decrease further, and the risk of chromosomal abnormalities increases. However, individual factors such as health and lifestyle can also influence egg viability.
How could Neanderthals and Humans interbreed to produce fertile and viable offspring Assuming they were different species?
Neanderthals and humans are genetically similar. Less than one percent difference in their DNA.
Why can intersex animals self-fertilize but intersex humans are mostly sterile or infertile?
Intersex animals can sometimes self-fertilize due to their reproductive systems that may possess both male and female organs, allowing them to produce viable gametes and fertilize their own eggs. In contrast, intersex humans typically have complex chromosomal and hormonal variations that often lead to incomplete or nonfunctional reproductive systems, resulting in sterility or infertility. Additionally, the genetic and physiological differences between species play a significant role in the reproductive capabilities of intersex individuals. Thus, while some intersex animals can successfully reproduce, intersex humans generally cannot.
Can sperm damaged by alcohol use cause a miscarriage?
Yes. Abnormal sperm are less likely to fertilize an egg and more likely to create a non-viable embryo which can lead to miscarriage.
Can you graft an apple to a fig tree?
It is possible to graft an apple to fig tree. However, the hybrid will likely not be viable or fruit-producing.
If a turkey leaves her eggs how long do you have in tell they become infertile?
After about 10 days if she has not returned they will most likely not be viable. This depends on temperatures and weather.
Can non viable sperm get viable?
Yes
