There are three genotypes.
- Homozygous - Having two dominant genes.
- Heterozygous - Having one dominant gene and one recessive gene.
- Homozygous - Having two recessive genes.
If two organisms are dominant for a specific trait and produce an offspring that is recessive for that particular trait, the parent organisms have a heterozygous genotype.
After the macrophage fails the Helper T Cell stimulates the B cells if pathogen is extracellular and Cytotoxic T Cells if the pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
Answer: 0.18
Explanation:
For the alleles, the percentage distribution of each is 'A' (90% = 0.9)
While 'a' (10% = 0.1)
Hence, 0.9 and 0.1 are the respective frequencies of each allele
Now, apply Hardy-Weinberg Equilibrium equation, where heterozygotes are represented by the 2pq term.
Therefore, the number of heterozygous individuals (Aa) is equal to 2pq which equals
2 × 0.9 × 0.1 = 0.18
Thus, the frequency of heterozygote is 0.18, while the percentage distribution in the population is 18%
Answer:
Because they are triploblastic ( Triblastica ).
Explanation:
Their body is composed of endoderm, mesoderm and ectoderm. While Cnidaria are Diblastica, so they are composed only from two layers: endoderm and ectoderm.
In addition larvae of Echinoderms are bilaterally symmetrical and they become nearly-radial only as adults.