Which of the following crosses does not follow Mendel's law of segregation? 1. Two tall pea plants (Tt x Tt) are expected to produce some tall offspring plants.

2. Two tall pea plants (Tt x Tt) are expected to produce some short offspring plants.

3. A tall pea plant and a short pea plant (Tt x tt) are expected to produce all tall offspring plants.

4. A tall pea plant and a short pea plant (TT x tt) are expected to produce all tall offspring plants.

Sperm pass through the and connect to a short ejaculatory duct. vas deferens prostrates seminiferous tubules none of the above

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point