During meiosis, which of the following allows for variations in alleles in the gametes formed? a)homologous chromosomes stay together
b)chromosomes cross-over
c)daughter cells identical to parent cells
d)genetic drift

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream

Variety of living organisms; includes genetic, species, and ecological types.

Can someone me i need the answer and don’t understand?