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xz_007 [3.2K]
3 years ago
6

Which of the following scientists developed laws of inheritance before DNA and genes were discoverd

Biology
1 answer:
bogdanovich [222]3 years ago
5 0

Answer:

Gregor Mendel

Explanation:

Genetics as a scientific discipline stemmed from the work of <u>Gregor Mendel </u>in the middle of the 19th century.

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Discuss how the human immune system responds to an initial pathogenic exposure and how this initial exposure can lead to a quick
Serga [27]

Answer:

Immediately, the pathogen has been recognized:

Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.

The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.

Antibodies helps to immobilize pathogen for macrophage to feed on.

if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.

6 0
3 years ago
How are humans affecting the global food<br> supply?
Alex787 [66]
We humans are affecting the global food supply because of climate change. As you know the world is super polluted and threat of climate change is the collapse of food systems: Other threats — flooding, storms, forest fires — may be more sudden and severe in certain regions, but disruptions in food supply will affect virtually everyone.
6 0
3 years ago
In chickens, comb shape is determined by alleles at two loci (R, r and P, p). A walnut comb is produced when at least one domina
frutty [35]

Answer:

a) All Walnut , Genotype - RrPp

b) Walnut : Rose: Single

1:1:2

Explanation:

Phenotype and their Genotype -

Walnut comb - R_ P_

Rose Comb - R_ pp

Pea Comb - rr P_

Single Comb  - rr pp

a) RR PP *  rr pp

All progenies will have genotype RrPp (Walnut Comb)

b) Rr Pp *  rr pp

RrPp (4), Rrpp (4), rrpp (8)

Walnut : Rose: Single

1:1:2

4 0
3 years ago
The respiratory system depends on the nervous system for signals to
ira [324]
Coordinates muscles controlling breathing ..

Hope it helps.
6 0
3 years ago
Which are examples of ecosystem diversity?
natita [175]

Answer:

Deserts.

Forests.

Large marine ecosystems.

Marine ecosystems.

Old-growth forests.

Rainforests.

Tundra.

Coral reefs.

Explanation:

3 0
2 years ago
Read 2 more answers
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