Which nitrogenous base is part of an RNA molecule but not a DNA molecule?

All of the following reproductive structures are considered female except A. stigma. B. petal. C. ovary. D. ovule.

One more question do crayfish lay eggs and live on land

What is the structure of a protein molecule?

Why is carbon important to organisms

Which industry benefits from bio-genetic engineering in the growing of new strains in more arid regiond of the plains states?

The R locus determines flower color in a new plant species. Plants that are genotype RR have red flowers, and plants that are rr have white flowers. However, Rr plants have pink flowers.

What's the difference between meiosis 1 and meiosis 2

In humans, widow's peak (w) is dominant over straight hairline (w). if a heterozygous male marries a female with a straight hairline, what percent of their children can be expected to have widow's peak?

List the structures that make up the pathway of air through the respiratory system starting with the external nares.

What are the components of acid rain