Which statement is true of crossing over

A - what occurs during prophase of mitosis

B - it allows for genetic variation

C-it occurs only in animals

Q3.19. Think about what the terms density-dependent and density-independent mean. Which of the following statements about how density-dependent and density-independent factors affect population growth is TRUE?

In chickens, the allele for a pea comb (A) is dominant to the allele for a single comb (a). A mother with the genotype Aa and a father with the genotype Aa produce an offspring.

A true statement about the circulatory system is A. The pulmonary arteries carry oxygen-rich blood from the heart to the lungs B. The pulmonary veins carry oxygen-rich blood from the lungs to fed heart C.

What does a flower grow from? A stem, a leaf, or a bud?

asexual reproduction involving the growth of a new individual from part of an older organism; uneven distribution of cytoplasm that results in one cell receiving most of the cell contents

Live bearing vertebrate

What organelle moves proteins and other substances through the cell

Different between animal cells and plant cells?

The statement force equals mass times acceleration is newton's second law of motion why is this a law than a theory?

What are fluid dynamics