Nā nīnau hoʻohālike e kūkākūkā ana i ka hoʻoilina o nā ʻano
ʻO ka hoʻoilina kekahi o nā kumuhana hoihoi loa i ka genetics, kahi e aʻo ai pehea e hoʻoili ʻia ai kekahi mau ʻano mai kekahi hanauna a i kekahi. ʻO ka hoʻomaopopo ʻana i ka hoʻoilina e kōkua iā mākou e hoʻomaopopo i nā kaʻina hana olaola e pili ana i ka loli o nā meaola ola. Ma kēia ʻatikala, e kūkākūkā mākou i kekahi mau pilikia hoʻohālike e pili ana i ka hoʻoilina a kūkākūkā i kā lākou mau hoʻonā.
Hoʻolauna i ka Hoʻoilina o nā ʻAno
Ma mua o ko kākou komo ʻana i nā nīnau hoʻohālike, e kūkākūkā pōkole kākou i ke kumumanaʻo kumu o ka hoʻoilina. Pili loa ka hoʻoilina i ka DNA, nā genes, a me nā chromosomes. ʻO nā genes nā ʻāpana kumu o ka hoʻoilina e kāohi ana i nā ʻano like ʻole o nā mea ola. Hoʻoilina nā mea ola i nā genes mai ko lākou mau mākua, e loaʻa ana ka hapalua mai ko lākou makuakāne a me ka hapalua mai ko lākou makuahine.
ʻO Gregor Mendel, i manaʻo ʻia ʻo ia ka makuakāne o ka genetics, ua ʻike ʻo ia i nā loina kumu o ka hoʻoilina ma ke aʻo ʻana i nā pī. ʻO nā kānāwai kaulana loa a Mendel ʻo ia ke Kānāwai o ka Hoʻokaʻawale a me ke Kānāwai o ka Hoʻohui Kūʻokoʻa, e wehewehe ana i ke ʻano o ka māhele ʻana a me ka hoʻonohonoho ʻana o nā genes i ka wā o ka hoʻokumu ʻana o nā gamete.
Nā Nīnau Laʻana a me ke Kūkākūkā
I mea e hoʻomaopopo maikaʻi ai i ka hoʻoilina o nā ʻano, e nānā kākou i kekahi mau nīnau hoʻohālike a me kā lākou mau kūkākūkā ʻana.
Nīnau 1: Hoʻoilina Monohybrid
Nīnau:
Ua hui ʻia kahi mea kanu pua poni (dominant) me kahi mea kanu pua keʻokeʻo (recessive). Hōʻike ʻia ka pua poni dominant e ka allele "U" a me ka pua keʻokeʻo e ka allele "u". Inā he heterozygous ka mea kanu poni, he aha ke ʻano a me ka genotype o ka hua?
Kūkākūkā:
1. Ka ʻIke ʻana i ka Genotype:
– Loaʻa i nā mea kanu pua poni (heterozygous) ke ʻano genotype “Uu”.
– Loaʻa i nā mea kanu pua keʻokeʻo ke ʻano genotype “uu”.
2. Hoʻohuihui:
Hoʻohana mākou i ka papa Punnett e hoʻoholo ai i nā genotypes hiki o ka hua.
ʻoe | ʻoe |
|——|—-|—-|
ʻU | ʻUu | ʻUu |
ʻu | ʻu | ʻu |
3. Nā Hualoaʻa Genotype:
– 50% Uu (pua poni)
– 50% uu (nā pua keʻokeʻo)
4. Nā Hopena Phenotype:
– 50% o nā keiki he ʻano poni ko lākou
– He keʻokeʻo ke ʻano o 50% o nā keiki
No laila, ke hui pū ʻia kahi mea kanu pua poni heterozygous me kahi mea kanu pua keʻokeʻo, e loaʻa i ka hua kahi lakio phenotypic 1:1 o ka poni i nā pua keʻokeʻo.
Nīnau 2: Hoʻoilina Dihybrid
Nīnau:
I loko o nā mea kanu pī, ʻoi aku ka nui o ke ʻano poepoe o ka hua (R) ma mua o nā hua wrinkled (r) a ʻoi aku ka nui o ke kala melemele o ka hua (Y) ma mua o ka ʻōmaʻomaʻo (y). Inā ua hui ʻia kahi mea kanu me ka genotype RrYy me kahi mea kanu me ka genotype like, he aha ka lakio phenotype o nā hua i loaʻa?
Kūkākūkā:
1. Ka ʻIke ʻana i ka Genotype:
– Loaʻa i nā mea kanu ʻelua ke ʻano genotype RrYy.
2. Ke keʻa ʻana me ka hoʻohana ʻana i ka Papa Punnett:
Pili ke keʻa ma luna nei i ʻelua mau ʻano, no laila pono mākou e kūkulu i kahi papa Punnett kahi e hiki ai i kēlā me kēia mea kanu ke hana i nā hui gamete penei: RY, Ry, rY, ry.
3. Ka hoʻokumu ʻana o ka Papa Punnett:
| RY | Ry | rY | ry |
|——-|——|——|——|——|——|
| RY | RRY | RRy | Rry | Rry | Rry |
ʻO Ry | RRY | RRy | RrY | Rry |
ʻOiaʻiʻo nō.
ʻO Ry | ʻO Ry | ʻO Ry | ʻO Ry | ʻO Ry |
4. Nā Hopena Phenotype:
Ma muli o ka papa ma luna, hiki iā mākou ke helu i ka lakio phenotype:
– 9/16 hua poepoe melemele (RRYY, RRYy, RrYY, RrYy)
– 3/16 hua poepoe ʻōmaʻomaʻo (RRyy, Rryy)
– 3/16 hua melemele ʻāwili (rrYY, rrYy)
– 1/16 hua ʻōmaʻomaʻo ʻāwili (rryy)
ʻO ka lakio phenotype o ke keʻa RrYy x RrYy he 9:3:3:1.
Nīnau 3: Hoʻoilina ma o nā kumu moekolohe
Nīnau:
ʻO ka makapō kala (makapō kala) he ʻano recessive i pili i ka chromosome X. Inā he mea lawe ka makuahine i ka makapō kala (X^NX^n) a he maʻamau ka makuakāne (X^NY), he aha ka pakeneka o kā lākou mau keikikāne e makapō kala paha?
Kūkākūkā:
1. Ka ʻIke ʻana i ka Genotype:
– ʻO Māmā ka mea lawe o (X^NX^n).
– Makua kāne maʻamau (X^NY).
2. Hoʻohuihui:
\[ \text{ Eia nā hui pū ʻana:} \]
– Nā kaikamahine: X^NX^N (maʻamau) a i ʻole X^NX^n (mea lawe)
– Nā keikikāne: X^NY (maʻamau) a i ʻole X^nY (makapō kala)
3. Nā Hualoaʻa:
– Nā keikikāne: 50% maʻamau, 50% makapō kala.
– Nā kaikamahine: 50% maʻamau, 50% nā mea lawe.
No laila, he 50% ka manawa kūpono o nā keikikāne e makapō kala.
Ka hopena
Hāʻawi kēia kūkākūkā ʻana i nā pilikia hoʻoilina i ka ʻike pehea e hoʻoili ʻia ai nā genes mai nā mākua i nā keiki a pehea e hana ʻia ai ka loli genetic. ʻAʻole wale kēia he mea nui no ka hoʻomaopopo ʻana i ka biology kumu akā he mau noi kūpono hoʻi i ka mahiʻai, ka lāʻau lapaʻau, a me ka biotechnology. Me ka hoʻomaʻamaʻa a me ka hoʻomaopopo ʻana i nā kumumanaʻo kumu o ka genetics, hiki iā mākou ke wānana maikaʻi i nā hopena o nā ʻano keʻa genetic like ʻole a hoʻomaopopo i nā dinamika paʻakikī o ke ola a puni mākou.
