Genetics, blood type gene has two alleles, each allele has genotype A, B or O. The A and B are dominant, and O is recessive. So allele A combined with allele O is type A. Similarly, BO is type B, AA is type A, BB is type B, OO is type O, and AB is typeAB.
If both parents have type A blood, then the alleles could be AA or AO, thus the allele A frequency is 75%, allele O frequency is 25% for both parents. So the chance of alleles OO is 25% × 25% = 6.25%, alleles AA is 75% × 75% = 56.25%, alleles AO is 75% × 25% = 18.75%, alleles OA is 25% × 75% = 18.75%. Since AA, AO and OA are blood type A, and OO is blood type O, thus their child has 6.25% chance to be blood type O and 93.75% chance to be blood type A.
The +/- is called the rhesus factor, with + being dominant, and - being recessive. So if both parents are -, the kids are always -, otherwise the kids might be + or -.
Child Blood Type Estimate Table: Father's Blood TypeABABOMother's Blood TypeAA/OA/B/AB/OA/B/ABA/OBA/B/AB/OB/OA/B/ABB/OABA/B/ABA/B/ABA/B/
An adaptive feature is some something that the character can develop in its lifetime, an example can be the adaptive feature of fitness. the characters has started to go to the gym four times a week this past month.
Rhizobium is present inside the nodule of bean if we observed with the help of hand lens.
Explanation:
Rhizobium is a type of bacteria which is present inside the nodules of various leguminous plants. The main function of this bacteria is to convert the atmospheric nitrogen into nitrates form for the plant. These bacteria is also called nitrogen fixing bacteria. They make a symbiotic association with the plants. The plant provides food to the bacteria while bacteria provides nutrients so both get benefits from each other.
