Answer:
D. they are usually dominant or recessive.
Explanation:
alleles are pairs of genes found on a particular spot a chromosome. If one is dominant over the other it give rise to a particular trait.
A. Survival of the fittest and natural selection are interchangeable terms.
Carbon dioxide and photosynthesis
<span>Karotypes are best prepared using cells that have been arrested in metaphase. In metaphase or prometaphase, the chromosomes are most condensed.</span>
Being in nature or even viewing scenes of nature reduces anger fear and stress and increases pleasant feelings. exposure to nature not only makes you feel better emotionally it contributes to your physical well-being reducing blood pressure and heart rate muscle tension in production or stress hormones