Introducing Genetics 1, Life cycles and inheritance

Рет қаралды 10,568

5 жыл бұрын

MCQs on Genetics
Genetics 1, Life cycles and inheritance
Most of the DNA in a cell is found in the:
a. Mitochondria
b. Cytoplasm
c. Nucleus
d. Ribosomes
Human body (somatic) cells contain:
a. 23 chromosomes
b. 24 chromosomes
c. 44 chromosomes
d. 46 chromosomes
Approximately how many sperm cells will a healthy man produce in one day?
a. 1, 000
b. 10, 000
c. 100, 000
d. 100, 000, 000
Which of the following statements is true?
a. Mitochondria contains no genetic material of their own
b. Baby boys inherit their mitochondrial DNA from their fathers
c. Mitochondrial DNA is all coded for from the nuclear DNA
d. Boys and girls both inherit all of their mitochondrial DNA exclusively from their mothers
All somatic cells are derived via mitotic cell division from one single cell called a:
a. Sperm
b. Ovum
c. Zygote
d. Embryo

Пікірлер: 22

@michellefranklin201 5 жыл бұрын

So simply described and easily remembered. Fantastic. Thanks again. You are a super tutor. X

@62gavster 4 жыл бұрын

You explain it so well can't believe I actually understand it now, thank you.

@harleyhealing7715 2 жыл бұрын

Thank you so much for such an understandable explanation! I with our teachers in a uni were like you!

@Gamerkurtophat1 Жыл бұрын

thank you doc for sharing, it really helps me a lot

@josephinenamansa492 3 жыл бұрын

I love this Guy's lessons

@medlife9431 3 жыл бұрын

I will call u Lord Campbell.. I love your lectures ❤

@silentbooks3879 8 ай бұрын

Your voice is very soothing

@lovethhinckley6905 2 жыл бұрын

Thank you 💖

@HabiburRahman-fy1th 2 жыл бұрын

Thank you very much sir

@jessicap.125 4 жыл бұрын

Thank you for all the work that you do, Dr. Campbell. I have a question, is the mitochondria exactly the same as the mom? Is there a slight variation do to the dad's DNA despite that the male does not contribute to the mitochondria? Is this part of the cell that never changes?

@Campbellteaching 4 жыл бұрын

Yes, the child has exactly the same mitochondrial DNA as the mother. There will however be some change over long time periods due to mutation. Dad makes no contribution at all to the mitochondrial DNA line.

@mahamedfarah7906 5 жыл бұрын

Hi dr.john.thanks your lecturer views

@Campbellteaching 5 жыл бұрын

You are very welcome

@jagatjethava1273 5 жыл бұрын

Sir What effect of radiation in humans body (inside out or outside in burn) ?

@david-lemondecherilus3379 5 жыл бұрын

Hey there! If i m not mistaking, you are asking what are the effects of radiation on the human body is that correct? If so, I would say that we are exposed to various sorts of radiation throughout our daily lives. However, depending on the type ( from radiowaves to gamma rays), we may expect significant damages to our DNA. The higher the energy (low wavelengths &high frequency electromagnetic waves), the harsher the results. Subsequently, we may experience errors in the checkpoints of interphase (which may lead to cancerous cells proliferating, dna destructions etc)

@Campbellteaching 5 жыл бұрын

usefull answer

@Campbellteaching 5 жыл бұрын

Depends on the dose, a large dose will cause acute radiation sickness. Many people working on the fire at Chernobyl contracted leukaemia, as radiation effects the rapidly dividing cells in the bone marrow. Ionising radiations will increase cancer risk.

@jagatjethava1273 5 жыл бұрын

@@Campbellteaching sir but what effect on molecular level ? Maybe patient affected by radiation like Chernobyl nuclear plant what they feel ?