What did Mendel's cross-pollination of pea plants prove?


A. Inherited factors combine in offspring to create entirely new characteristics.


B. Each parent only passes on one-half of its hereditary factors to each offspring.


C. There is no such thing as a true-breeding plant; they all have hidden factors.


D. It takes four generations of offspring to identify the parents' factors.

Answer:

B. Each parent only passes on one-half of its hereditary factors to each offspring.

Explanation:

Pea plants have both male and female reproductive organs.  As a result, they can either self-pollinate themselves or cross-pollinate with another plant.  In Mendel's experiments, he was able to cross-pollinate purebred plants with particular traits and observe the outcome over many generations.  

As a little fun fact; as we know, both human parents have 46 chromosomes, and when reproduction occurs, they both give half of their chromosomes (23) to their offspring!

HELP ACK
ulate the kinetic energy for the small marble when dropped at each height.
KE =½ mv2. Be sure to show all your work.


Height of drop
formula
substitution
Answer with unit
60 cm






90






2 m

A group of students is studying the types of plants that grow in a meadow next to their school. The meadow is mowed regularly, but it does not get any water other than rainfall. The meadow has several kinds of plants that are typically found in a grassland ecosystem. The plants include grass and clover. But there aren't any trees. The meadow has insects, including ants. Earthworms live in the soil. Garter snakes and mice also live in the meadow.

which type of weather is most likely to occur along an occluded front? A,B,C or D?

PLEASE HELP THIS IS DUE BY MIDNIGHT TONIGHT!!!!
Calculate the average daily temperature for each thermometer. What is the difference between the two?