Chromosomal Theory Of Inheritance | Class 12 Biology
83.6 هزار بار بازدید -
3 سال پیش
-
Chromosomal Theory Of Inheritance |
Chromosomal Theory Of Inheritance | Class 12 Biology
About This Video ........................
In This Video Lecture You Will Learn Basic Concept Of Chromosomal Theory Of Inheritance
A central role for chromosomes in heredity was first suggested in 1900 by the German
metaphase plate independently of every other pair.
There is however one problem with this theory. If Mendelian characters are determined by
In 1910 Thomas Hunt Morgan, studying the fruit fly, Drosphfila melanogaster, detected a
chromosomes, gametes have only one. This observation was consistent with Mendel’s model,
progeny had red eyes. He
eyes in the F2
Morgan crossed mutant male to a normal female. All F1
progeny was greater than 3:1, the results of the cross nevertheless
to have serious reservations about Sutton’s theory.
Several pieces of evidence supported Sutton’s theory. One was that reproduction involves
genes located on the chromosomes, and if the independent assortment of Mendelian traits
cytoplasm, suggesting that the hereditary material must reside within the nuclei of the
mutant male fly, one that differed strikingly from normal lies of the same species its eyes
generation with each other. Of the 4252 F2
geneticist Karl Correns, in one of the papers announcing the rediscovery of Mendel’s work.
gametes. Furthermore, while diploid individuals have two copies of each pair of homologous
Walter Sutton in 1902.
Finally, chromosomes segregate during meiosis, and each pair of homologue orients on the
number of chromosome pairs the organism possesses? This has led many early researchers
in which diploid individuals have two copies of each heritable gene and gametes have one.
then crossed red eyed lies from F1
the initial union of only two cells, egg and sperm. If Mendel’s model was correct, then these
led directly to the chromosomal theory of inheritance, first formulated by the American
progeny
reflects the independent assortment of chromosomes in meiosis, why does the number of
two gametes must make equal hereditary contributions. Sperm, however, contain little
Morgan examined, 782 (18%) had white eyes. Although the ratio of red eyes to white
Soon after, observations that similar chromosomes paired with one another during meiosis
were white instead of red.
characters that assort independently in a given kind of organism often greatly exceed the
provided clear evidence that eye colour segregates.
About This Channel.....................
I make these videos cause I love to draw and connect the complexity of science and medicine into art. I'm not saying. I'm 100% correct in all my videos, but I do try to obtain the information from credible sources.
One-stop destination for all biology lectures.
_ students in class 11, 12 or appearing for competitive medical exams ( NMDCAT ) will find it very beneficial
_ The videos are categories under various heading to make the students life simplified
Visit My Other Channel Playlist .....................
NMDCAT PART 1: New 1st Year Biology
NMDCAT PART 2: New 2nd Year Biology
Class 11th Lectures: New 1st Year Biology
Class 12th Lectures: New 2nd Year Biology
Class 10th Lectures:
Matric Biology
Subscribe My Channel:
aliacademya7r
Social Link........................
Instagram:
https://instagram.com/ranaalibiologis... TWINS
About This Video ........................
In This Video Lecture You Will Learn Basic Concept Of Chromosomal Theory Of Inheritance
A central role for chromosomes in heredity was first suggested in 1900 by the German
metaphase plate independently of every other pair.
There is however one problem with this theory. If Mendelian characters are determined by
In 1910 Thomas Hunt Morgan, studying the fruit fly, Drosphfila melanogaster, detected a
chromosomes, gametes have only one. This observation was consistent with Mendel’s model,
progeny had red eyes. He
eyes in the F2
Morgan crossed mutant male to a normal female. All F1
progeny was greater than 3:1, the results of the cross nevertheless
to have serious reservations about Sutton’s theory.
Several pieces of evidence supported Sutton’s theory. One was that reproduction involves
genes located on the chromosomes, and if the independent assortment of Mendelian traits
cytoplasm, suggesting that the hereditary material must reside within the nuclei of the
mutant male fly, one that differed strikingly from normal lies of the same species its eyes
generation with each other. Of the 4252 F2
geneticist Karl Correns, in one of the papers announcing the rediscovery of Mendel’s work.
gametes. Furthermore, while diploid individuals have two copies of each pair of homologous
Walter Sutton in 1902.
Finally, chromosomes segregate during meiosis, and each pair of homologue orients on the
number of chromosome pairs the organism possesses? This has led many early researchers
in which diploid individuals have two copies of each heritable gene and gametes have one.
then crossed red eyed lies from F1
the initial union of only two cells, egg and sperm. If Mendel’s model was correct, then these
led directly to the chromosomal theory of inheritance, first formulated by the American
progeny
reflects the independent assortment of chromosomes in meiosis, why does the number of
two gametes must make equal hereditary contributions. Sperm, however, contain little
Morgan examined, 782 (18%) had white eyes. Although the ratio of red eyes to white
Soon after, observations that similar chromosomes paired with one another during meiosis
were white instead of red.
characters that assort independently in a given kind of organism often greatly exceed the
provided clear evidence that eye colour segregates.
About This Channel.....................
I make these videos cause I love to draw and connect the complexity of science and medicine into art. I'm not saying. I'm 100% correct in all my videos, but I do try to obtain the information from credible sources.
One-stop destination for all biology lectures.
_ students in class 11, 12 or appearing for competitive medical exams ( NMDCAT ) will find it very beneficial
_ The videos are categories under various heading to make the students life simplified
Visit My Other Channel Playlist .....................
NMDCAT PART 1: New 1st Year Biology
NMDCAT PART 2: New 2nd Year Biology
Class 11th Lectures: New 1st Year Biology
Class 12th Lectures: New 2nd Year Biology
Class 10th Lectures:
Matric Biology
Subscribe My Channel:
aliacademya7r
Social Link........................
Instagram:
https://instagram.com/ranaalibiologis... TWINS
- #education
- #chromosomal_theory_of_inheritance_in_urdu
- #chromosomal_theory_of_inheritance_in_hindi
- #chromosomal_theory_of_inheritance_by_ali_academy
- #chromosomal_theory_of_inheritance_class_12
- #chromosomal_theory_of_inheritance_2nd_year
- #chromosomal_theory_of_inheritance_by_ritu_rattewal
- #chromosomal_theory_of_inheritance_by_dr_hadi
- #chromosomal_theory_of_inheritance_by_power_of_knowledge
3 سال پیش
در تاریخ 1400/11/03 منتشر شده
است.
83,680
بـار بازدید شده