Once a woman attains puberty, her ovaries mature and release one egg per ovarian cycle. which hormone stimulates this event?

luteinizing hormone (lh)

follicle–stimulating hormone (fsh)

thyroid hormone (tsh)

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?