The correct answer to the question Which of the following was an early realization that gave rise to Darwin's theory of natural selection? is D The earth and its organisms have changed through time.
False,your respiratory muscle expand each time when you exhale.
<u>Answer:</u>
<em>C. many more generations can be studied using short-lived organisms</em>
<u>Explanation:</u>
<em>Fruit flies are organisms with a shorter lifespan.</em> Their average lifecycle takes about a week to develop from lava to an adult. This <em>characteristic of fruit flies are reason they are used for the genetic investigation. </em>
The <em>genetic characteristics of the organism</em> can be studied over a short time. The accuracy of the study can be increased as there will be more <em>data and statistics related to same experiment. </em>
<em>Long term effect as well as short term effect can be studied easily. </em>
Answer:
Explanation:
A base pair is two chemical bases bonded to one another forming a "rung of the DNA ladder." The DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.