Examlex
Which one of the following is a trait that increases the chances of survival for an endangered species?
Fetus
A developing mammal or human after the embryonic stage and before birth.
Syphilis
A sexually transmitted bacterial infection that can cause serious health problems if not treated.
Down's Syndrome
A genetic disorder caused by the presence of all or part of a third copy of chromosome 21, characterized by distinctive physical features and developmental delays.
Zygote
The initial cell formed when a sperm cell fertilizes an egg cell, representing the earliest stage of human development.
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