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/
Genetics comes with birth and is from previous ancestors. It's genetic code, also known as DNA. You are born with your genetics inherited from your parents.
The chromosome is a small circular segment of DNA found in the cytoplasm of prokaryotes that is capable of independent replication and usually contains nonesse. <u>True</u>
The students with the purple shirts are moving through the gym doors most often.
Explanation:
The students with the purple shirts represent potassium ions
Potassium ions move freely across the membrane by passive transport and are important in maintaining membrane potentials
The movement of sodium ions is through active transport therefore this is a process that requires energy (ATP) and thus these ions are less likely to move across the membrane often
Succession is a phenomenon in which older communities are replaced by advanced and newer communities
Primary succession is the one in which succession occurs at newer area where none of the community previously evolved
Secondary succession is the one in which the substrate has already been prepared by the older communities so that the newer community which will arrive grow faster that is why secondary succession has faster pace
Glacial retreats leave behind nothing but bare rock as they retreat from an area, leaving barren land from which primary succession can occur which enables scientist to study plant succession
