Answer:
Two people with brown hair could have a child with blonde hair, but only if they are both heterozygous.
Answer;
The correct answer would be Rr.
In a monohybrid cross, the phenotype ratio of 3:1 is obtained only when both the parents are heterozygous for the trait.
In this condition, the heterozygous genotype would be Rr. The phenotype of both the parents would be round seeds (R) as the round is a dominant trait.
The cross of these parents would produce offspring with three types of genotypes RR, Rr, and rr in ratio 1:2:1.
Thus, the phenotypic ratio would come out to be 3 (round seed):1 (wrinkled seed).
Answer:
Explanation:
The sealed ballon filled with air has a constant pressure when introduced into the deep freezer.
Using the gas law relationships, once can easily understand the outcome of this set up.
Inside the freezer, the most apparent thing is that the balloon is subjected to a rapid decrease in temperature.
According to Charles law "At constant pressure, the volume of given mass of gas is directly proportional to its temperature".
Since the pressure in the balloon is likely retain, the lowering of the temperature will reduce the volume of the gas and cause the balloon to shrink. The gas particles will lose their kinetic energy and move with less vigor.
Organisms adapt to their changing environment. When there is some pressure in the environment (for example, increased competition for food), then species with the most advantageous adaptations will survive. Because environments change pretty frequently, the organisms living there must cope with this change. This leads to ever changing and evolving species and increased biodiversity. Lastly, a high level of biodiversity leads to a healthy ecosystem because of the vast variety of organisms in that space. Many species allows niches to overlap and therefore no one organism occupies one niche.
