It involves a physical exchange of segments from homologous chromosomes. Because of crossing over, alleles originally located on the same chromosome can end up on different chromosomes and be inherited independently
Answer:
B. When there are limited resources
Molecules lose energy and do not vibrate or move around as vigorously. This allows more stable hydrogen bonds to form between water molecules and there is less energy to break the bonds.
Answer:
<em>The correct option is C) Dd and Dd</em>
Explanation:
To explain the answer, lets make a punnet square with a cross between Dd and Dd.
D d
D DD Dd
d Dd dd
As deafness is a recessive trait, this means that both the alleles in a person should be same and recessive for that trait to occur in the phenotype. A cross between heterozygous carriers show that there will be a 25% probability that the offsprings produced will get the recessive alleles and hence they will be deaf. 50% of the offsprings will have the chance to be carriers like their parents. And there willbe a 25% chance that they will have normal homozygous alleles.