suppose that a carrier of familial down syndrome mated with a person with a normal karyotype. which gamete from the carrier parent could fuse with a gamete from the normal parent to produce a trisomy-21 zygote? drag one of the gamete cells to the target of group 1 in the diagram. drag one of the zygote cells to the target of group 2 in the diagram.



Answer :

The gamete cells in groups 1 and 2 in the diagram that have trisomy 21 are the target. Move a single zygote cells to group 2's desired location in the diagram.

How long will people with trisomy 21 live?

The typical lifetime of a person having Down syndrome today is 60 years. A child with Down syndrome had a 25-year lifespan on average as late as 1983.

trisomy 21 a life-threatening condition?

Up to 6,000 children are born with Down ’s syndrome every year in the U.s, where it affects 1 in 800 newborns. Approximately 85% of babies with Down syndrome are thought to survive to adulthood, and 50% of them do so for more than 50 years.

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