Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere
Answer:
The answer is option A: layers
Answer:
The "short tail" dominant allele is easier to eliminate by selective breeding.
Explanation:
The only way for a recessive allele to be expressed (be visible) is when it appears as recessive homozygotic. These means the organisms need to have 2 copies of the gene. Selective breeding is based on the characteristics that one can see, so if the organism shows the "dilute" phenotype you can keep reproducing this individuals and get rid of the dominant allele.
On the other hand if you have a population with the dominant phenotype, you discard all the ones that have a recessive trait and you breed the dominant phenotype you could still get individuals with the recessive phenotype and individuals that express the dominant phenotype but are heterozygous.
Answer:
Blood types: AB, A, B, and O in ratio 1:1:1:1
Explanation:
The ABO blood group system is employed in Humans. The alleles for blood type A (A) and blood type B (B) are dominant over the allele for blood type O (O).
If a man who is heterozygous for blood type A (AO) marries a woman who is heterozygous for blood type B (BO), the following gametes will be produced by each parent:
AO - A and O
BO - B and O
Using these gametes in a punnet square, the following proportions of offsprings will be produced:
Blood type AB - 1/4
Blood type A - 1/4
Blood type B - 1/4
Blood type O - 1/4
