Video: Koj cov noob caj noob ces hais li cas txog koj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Koj Genes Thiab Koj
Nws hu ua DNA, thiab feem ntau yog tib yam rau txhua tus. Tab sis ib feem me me ntawm nws yog koj ib leeg. Cov kev sib txawv no pab txiav txim seb yuav ua li cas koj saib, txoj kev koj lub cev ua haujlwm, koj pheej hmoo rau kab mob, thiab koj tus kheej.
Ib yam li ntawd, tib neeg nug, koj cov noob hais li cas txog koj?
Koj Genes Thiab Koj Nws hu ua DNA, thiab feem ntau yog tib yam rau txhua tus. Tab sis ib feem me me ntawm nws yog koj ib leeg. Cov kev sib txawv no pab txiav txim seb yuav ua li cas koj saib, txoj kev koj lub cev ua haujlwm, koj pheej hmoo rau kab mob, thiab koj tus kheej.
Kuj Paub, ntau npaum li cas ntawm koj tus cwj pwm tau txais txiaj ntsig? Cov kev tshawb fawb ntxaib qhia tias cov menyuam ntxaib zoo ib yam muaj kwv yees li 50 feem pua ntawm cov yam ntxwv zoo ib yam, thaum cov menyuam ntxaib sib koom tsuas yog kwv yees li 20 feem pua. Tus kheej cov yam ntxwv yog complex thiab kev tshawb fawb qhia tias peb qhov zoo yog zoo li ob leeg qub txeeg qub teg thiab ib puag ncig yam.
Kuj tseem paub yog, cov noob caj noob ces cuam tshuam li cas rau peb lub neej niaj hnub?
Genes cuam tshuam rau peb Muaj feem yuav muaj ntau yam mob xws li mob plawv, mob hawb pob thiab ntshav qab zib tab sis yog li ntawd ua ntau lwm yam, xws li kev noj haus thiab txoj kev ua neej . Nws zoo li kev twv txiaj ntawm kev sib tw nees - nees, caij nees, chav kawm thiab huab cua tuaj yeem ua txhua yam cuam tshuam qhov tshwm sim hauv ib txoj kev uas nyuaj rau kwv yees.
Tus niam txiv twg txiav txim siab zoo li cas?
Ib khub yog poj niam txiv neej chromosomes, hu ua X thiab Y. Lawv yuav txiav txim kev sib deev ntawm koj tus menyuam. Qhov sib xyaw ntawm cov noob tam sim no ntawm chromosomes, kwv yees li 30,000 ntawm lawv, yuav, piv txwv li, txiav txim : xim ntawm koj tus menyuam qhov muag.
Pom zoo:
Dab tsi yog txhais los ntawm cov noob tseem ceeb thiab cov noob caj noob ces?
(Nyob rau hauv cov ntsiab lus ntawm caj ces, ib qho tseem ceeb tshaj plaws yog ib qho uas yog phenotypically qhia hauv heterozygotes). Ib qho tseem ceeb tshaj plaws yog tawm tsam qhov tsis zoo uas tshwm sim tsuas yog thaum muaj ob daim ntawv theej ntawm cov noob. (Nyob rau hauv cov ntsiab lus genetic, ib tug recessive zoo yog ib tug uas yog phenotypically qhia tsuas yog nyob rau hauv homozygotes)
Yuav ua li cas tus tsim cov nyhuv ua rau cov noob caj noob ces?
Genetic drift tuaj yeem ua rau poob loj ntawm kev hloov caj ces rau cov neeg me. Qhov tshwm sim tus tsim tshwm sim thaum lub colony tshiab pib los ntawm ob peb tus tswv cuab ntawm thawj cov pej xeem. Cov pej xeem me me no txhais tau hais tias cov cheeb tsam yuav muaj: txo cov noob caj noob ces los ntawm cov neeg qub
Yuav ua li cas cov khoom siv caj ces hauv txhua lub xov tooj tshiab tsim los ntawm kev faib tawm ntawm tes sib piv nrog cov khoom siv caj ces hauv lub xov tooj qub?
Mitosis tshwm sim nyob rau hauv ob lub nuclei uas zoo tib yam rau thawj nucleus. Yog li, ob lub hlwb tshiab tsim tom qab kev faib tawm ntawm tes muaj tib yam khoom siv caj ces. Thaum lub sij hawm mitosis, chromosomes condense los ntawm chromatin. Thaum saib nrog lub microscope, chromosomes pom nyob rau hauv lub nucleus
Vim li cas kev nkag siab txog noob caj noob ces tseem ceeb rau cov tub ntxhais kawm?
Vim li cas kev kawm noob caj noob ces tseem ceeb? Nyob rau yav tom ntej, cov kws kho mob thiab cov kws tshawb fawb vam tias yuav siv peb cov ntaub ntawv caj ces los kuaj, kho, tiv thaiv thiab kho ntau yam mob. Cov noob yog cov lus qhia, uas qhia koj lub cev yuav ua li cas ua kom tag nrho cov proteins nws xav tau kom muaj sia nyob thiab loj hlob
Ib puag ncig ntawm ib lub xov tooj ntawm tes thiab cov kab mob cuam tshuam li cas ntawm cov noob caj noob ces?
Splicing ntawm mRNA nce tus naj npawb ntawm cov protein sib txawv uas lub cev muaj peev xwm tsim tau. Gene qhia yog tswj los ntawm cov proteins uas khi rau cov hauv paus hauv paus hauv DNA. Ib puag ncig ntawm ib lub xovtooj ntawm tes thiab ntawm lub cev muaj feem cuam tshuam rau cov noob caj noob ces