Answer:
<em>The correct option is B. Alleles</em>
Explanation:
The punnet square can be described as a diagram which shows the outcomes of a cross. A punnet square will help us know what will be the probability for a particular trait to occur in the offsprings.
Genes might have the same or different alleles. If the alleles for a gene are similar in an organism, the organism is said to be homozygous for the trait. If the alleles are different, then the organism is termed as heterozygous.
A dominant allele is the one which which suppresses the effect of the recessive allele. A recessive allele gets masked by a dominant allele.
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Answer:
An increase in temperature increases the rate of evaporation and decreases the relative humidity of the environment. The more stomata on the leaf, the more water evaporates the leaf.
In addition to lowering carbon dioxide levels during photosynthesis, light can have a direct effect on guard cells, causing them to swell.