מנדל- חוק הראשון אילנות יוחסין מנדל- חוק השני.

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Presentation transcript:

מנדל- חוק הראשון אילנות יוחסין מנדל- חוק השני

Reciprocal הדדי

F1F1

Self-cross of each F2 3 types only

Test Cross הכלאת מבחן ‘impure’ ‘pure-breeding’

Genes exist, come in pairs Gametes – only 1 gene copy pair of copies SEGREGATE alleles combine randomly In offspring Each gamete – only 1 gene copy recessive allele חוק כפל

אללים של גן מנדל- חוק הראשון: חוק ההפרדה (סגרגציה)

Test Cross הכלאת מבחן 3 types only

פנוטיפ דומיננטי רצסיבי דומיננטי רצסיבי YY Yy yy גנוטיפ הומוזיגוט-דומיננטי הטרוזיגוט הומוזיגוט-רצסיבי היבריד - Hybrid

אלל: גן לצבע פרחים אלל סגול אלל לבן

Mendel’s rule is relevant for organisms that sexually reproduce: diploid/haploid –Plants, Animals, many Monera…

אילנות יוחסין II

Polydactyly

III

Di-hybrid די-היבריד

Mendel’s 2 nd Law: Genes segregate independently אין תלות בין גנים בסגרגציה (הפרדה)

חוק כפל

Mendel’s 2 nd Law: Genes segregate independently אין תלות בין גנים בסגרגציה (הפרדה) מנדל- חוק השני: חוק ההתפלגות העצמאית

Punnett square

חוק כפל

הכלאת מבחן

END