Genetics, Form 4 Biology, Topic 2, Dr. Mlelwa

Genetics is a branch of biology which deals with the study of heredity and variations in organisms.

Advanced 0(0 Ratings) 5 Students enrolled English-and-swahili
Created by Dr. Mlelwa
Last updated Mon, 27-Nov-2023
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Course overview
Heredity refers to the transmission of genetic information from one generation to another. That is, the passing on of features or characteristics from parents to offspring or progeny. In humans, for example, features such as hair colour and body shape of the parents can be passed on (inherited) to their children. In genetics, a feature that can be inherited by the offspring from the parent is known as a trait. Thus, features such as hair texture, hair colour, and skin colour are all traits.
The hereditary characteristics are passed on from parents to their offspring through distinct units called genes. Genes are hereditary materials or factors, which determine a specific characteristic or trait in an organism.
Variations are the observable differences in organisms of the same species. Living things arise from other living things of the same species through reproduction. However, organisms show a great number of variations. No two organisms are exactly the same. The variations may be due to mutations of genetic material (DNA) caused by x-rays, gamma rays, ultra radiations or radioactive elements. Variations may also occur during gamete formation and combination of gametes at fertilization.
Genetics, therefore, attempts to explain either how organisms do resemble their parents in certain features or differ from their parents in other features.

What will i learn?

  • You will learn concept of genetics, concept of hereditary material, DNA and RNA, Mendelian genetics, Non Mendelian genetics, mutation, application of genetics
Requirements
  • silent room for studying, biology book or good notes, pen, pencil, exercise book
Curriculum for this course
10 Lessons 02:03:51 Hours
Genetics
10 Lessons 02:03:51 Hours
  • Introduction to genetics
    Preview 00:10:24
  • Common terms used in genetics
    00:16:05
  • Common terms used in genetics
    00:18:33
  • Common terms used in genetics
    00:12:43
  • Genetic material
    00:12:27
  • Mendel's first law of inheritance
    00:11:00
  • Test cross and back cross
    00:11:32
  • Solved examples
    00:08:09
  • Dominance types
    00:16:14
  • Variation and its types
    00:06:44
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About instructor

Dr. Mlelwa

Dr. Mlelwa is an experienced online tutor in biology and chemistry from ordinary level to advanced level. His highest level of education is two years of doctor of medicine (MD) at Muhimbili university of Health and allied science in from Nov 2018 to Sept 2020. There after he failed to continue with Doctor of Medicine Studies due to several reasons which are out of scope of this description. He started online teaching since January 2020 in his YouTube channel (Dr.Mlelwa Lectures) by that time he was still a medical student dreaming to become one among the best tutor in medical studies, that's why he called the channel Dr. Mlelwa Lectures, comparing to Dr. Najeeb Lectures who was one of his role mode. His good performance, being the second best boy in advanced biology examinations national wise in 2018, made him one among most interesting online tutor, having influence to different students inside Tanzania as well as abroad.

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Naitwa Helbeth Issack Mlelwa. Siku ya ijumaa, March 13, 1998, historia na kumbukizi za wazazi wangu zinasema kwamba ndio siku ambayo nilizaliwa na nafsi yangu ikaonja pumzi ya duni...
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