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Place the events of parturition in the correct order.
(1) Stretch-sensitive neurons send signals to the hypothalamus.
(2) Oxytocin receptors increase in the uterus.
(3) Prostaglandin levels increase.
(4) Estradiol levels increase.
(5) Oxytocin levels increase.
(6) Uterine muscles start to contract.
Speciation
Speciation is the evolutionary process by which new species arise. Speciation causes one evolutionary lineage to split into two or more lineages (cladogenesis).
Joshua Trees
A type of yucca plant native to the southwestern United States, characterized by its unique, spiky appearance and adapted to desert climates.
Endogenous Retroviruses
Viral sequences that have integrated into the genome of a host organism and can be inherited across generations.
Reverse Transcriptase
An enzyme used by certain viruses to transcribe their RNA into DNA, enabling them to integrate into the host genome.
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