What happens when the neural tube fails to close?

How would you elicit the rooting reflex in your newborn niece?

a) lightly stroke her cheek b) stroke the bottom of her foot c) shine a light in the direction of her eyes d) hold her by the hands while her feet dangle

Handfuls of tomato seeds that vary genetically are grabbed from a bag and placed in two separate pots. The first pot has enriched soil and is exposed to sunlight,

whereas the nutrients in the second pot's soil have been depleted and the pot is placed in a dark corner. When the tomato plants grow: a. the heritability of between-pot differences is 100 percent but the heritability of within-pot differences is 50 percent. b. the differences within each pot are due to environment and the heritability of between-pot differences is 100 percent. c. the difference between pots is due to variations in soil and sunlight but the heritability of within-pot differences is 100 percent. d. the heritability of between-pot differences and within-pot differences are equal, ranging from 50 percent to 60 percent.