Which of the following is involved in "double fertilization"?

a-sperm

b-endosperm

c-embryo sac

d-all of the above

Analysis of mitochondrial DNA can answer interesting and important questions. For which of the questions would analyzing mitochondrial DNA be futile? Are you my father?

Which type of mutation results in an extra copy of all or part of a chromosome?

The outer nucleated cytoplasmic layer of a schwann cell is the

Maple leaf beetles and willow leaf beetles are named for the type of tree where they live and reproduce. They look identical to each other when observed, but experiments have shown that willow beetles would starve before eating maple leaves.

A passage of nutrients through the cell membrane into the cell

Describe the differences between a chromosome and a DNA molecule.

What role does oxygen play in a plants life?

Which measures the mass of an object? A) a spring scale (in N) B) a height scale (in feet) C) a graduated cylinder (in mL) D) a triple beam balance (in grams)

In his study of pea plants, Gregor Mendel used which method to produce offspring? O cross-pollination, by using parents that had identical traits O cross-pollination, by using parents that had different traits O self-pollination, by using one parent

Science and environment and Basic needs of living things B: Uncertain about the best way to keep his new lizard alive, Jerome places a heat lamp at one end of the long lizard cage.