Answer:
d. IgE
Explanation:
Immunoglobulin E (IgE) are antibodies that respond to allergic reactions. The response leads to the release of the anti-inflammatory histamine and vasoactive chemicals.
RrYy x rrYy
Gametes: RY, Ry, rY, ry and rY, ry, rY, ry
Upon crossing these gametes:
- RrYY, RrYy, RrYY, RrYy
- RrYy, Rryy, RrYy, Rryy
- rrYY, rrYy, rrYY, rrYy
- rrYy, rryy, rrYy, rryy
- A dihybrid cross is made up of two people who have two features that are regulated by two different genes. Gregor Mendel's observation of pea plants that were either round or wrinkled, yellow or green, gave rise to the concept of a dihybrid cross.
- When two heterozygous people are crossed, the offspring's genotype and phenotypic ratios will be predictable. Crossing heterozygous parents would result in an estimated phenotypic ratio of 9:3:3:1.
- Deviations from these predicted ratios may point to a relationship between the two features or to a non-Mendelian method of inheritance for one or both of the traits.
- The genotypes of a specific cross or breeding experiment are predicted using the Punnett square, a square diagram.
16 different genotypes will be formed.
Learn more about dihybrid cross:
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According to Harvard’s Medical school’s article, it says that sun exposure makes people live longer. Particularly, sunbathing. In general, you need vitamin D (from the sun) to maintain homeostasis and perform metabolic activities. So apparently, true.