2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Primary thiab secondary spermatocytes yog tsim los ntawm cov txheej txheem ntawm spermatocytogenesis. Thawj spermatocytes yog diploid (2N) hlwb. … Secondary spermatocytes yog cov hlwb haploid (N) uas muaj ib nrab ntawm cov chromosomes.
Pib spermatocyte yog dab tsi?
: a diploid spermatocyte uas tseem tsis tau muaj meiosis.
Puas yog thawj spermatocyte tsim ob spermatocytes thib ob?
Spermatogenesis pib nrog lub diploid spermatogonium nyob rau hauv cov tubules seminiferous, uas faib mitotically los tsim ob diploid thawj spermatocytes. Thawj cov spermatocyte ces dhau mus rau meiosis kuv los tsim ob haploid secondary spermatocytes.
Vim li cas cov spermatocytes thib ob me dua li thawj cov spermatocytes?
Cov kab mob uas tshwm sim los ntawm kev faib tawm ntawm cov kab mob thawj zaug tswj cov theem ntawm kev loj hlob nyob rau hauv lub cyst Secondary spermatogonia yog me dua thawj spermatogonia nrog loj me me basophilic nuclei thiab me cytoplasm.
Dab tsi yog qhov txawv ntawm cov chromosomes hauv cov spermatocyte thib ob?
chromosomes hauv cov spermatocytes thib ob yog duplicated thiab muaj 2 chromatids. hos cov spermatids tsuas muaj ib leeg xwb. spermatids mature rau phev (spermatozoa).
Pom zoo:
Puas yog cov hlwb meristematic muaj cov phab ntsa ntawm cov cell thib ob?
Cov phab ntsa ntawm cov hlwb meristematic yog hom feem ntau raug xaiv los ua cov phab ntsa thawj (Bailey, 1940). Kev saib xyuas zoo tshaj plaws tau muab rau cov phab ntsa ntawm cov hlwb sib txawv ntau dua, tshwj xeeb tshaj yog rau cov hlwb fiber ntau uas muaj kev lag luam tseem ceeb.
Puas yog txawv txawv thiab txawv txawv lossis cov lus sib txawv?
Cov lus txawv txawv thiab txawv txawv yog synonyms, tab sis txawv ntawm nuance. Tshwj xeeb, alienate tej zaum yuav los yog tsis qhia kev sib cais tab sis ib txwm hais txog kev poob kev hlub lossis kev txaus siab. Dab tsi yog lub ntsiab lus ntawm alienate?
Puas yog b qhov sib txawv ntawm qhov sib txawv ntawm ib?
Lo lus lub ntsiab lus ntawm 'inverse' yog ib yam dab tsi uas cuam tshuam. … Yog li qhov sib npaug ntawm tus lej yog tus lej uas qhov sib npaug ua rau 1. Qhov ntawd yog, tus lej b yog tus lej sib npaug ntawm tus lej a, if a × b=1. Puas B yog qhov sib txawv ntawm qhov sib txawv ntawm matrix?
David chaw nres nkoj puas yuav rov qab los ntawm cov neeg txawv txawv?
David Harbor tau hais tias nws tus cwj pwm Chief Hopper, Hawkins tus thawj coj ntawm tub ceev xwm, yuav rov qab los hauv Stranger Things lub caij 4 hauv style ntawm Gandalf lub Grey Gandalf Grey Gandalf Grey yog tus neeg ua yeeb yam hauv The Hobbit, qhov chaw nws pab Bilbo Baggins ntawm nws qhov kev tshawb nrhiav, thiab Tus Tswv ntawm Lub Rings, qhov twg nws yog tus thawj coj ntawm Tuam Txhab ntawm Lub Nplhaib.
Puas qhov sib txawv thiab qhov sib txawv ntawm tus qauv muaj cov chav nyob?
Variance yog qhov nruab nrab squared deviations los ntawm qhov txhais tau tias, thaum tus qauv sib txawv yog lub hauv paus square ntawm tus lej no. … qauv sib txawv yog qhia nyob rau hauv tib units raws li tus nqi qub (piv txwv li, feeb lossis meters).
