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jenyasd209 [6]
3 years ago
8

What are the body’s 2 defense systems for foreign materials

Biology
1 answer:
Alexxandr [17]3 years ago
8 0

Answer:

immune system

Explanation:

The adaptive immune system reacts specifically to pathogens (germs). It is able to recognize attacking pathogens and fights against certain antigens or foreign substances. The next time a known antigen is encountered, the adaptive immune system can respond faster.

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Are nerve cells in direct contact with other types of tissues ?​
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yes

Explanation:

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Consider the cross between two different pea plants with the following genotypes: PpTt x PpttP (purple flowers) is dominant over
Sonbull [250]

Gametes of the parents would be:

PpTt : PT ; Pt ; pT ; pt

Pptt : Pt ; Pt; pt ; pt


You can do this easily using the FOIL method on each genotype. Just like in math, F stands for first; O stands for outside; I stands for inside; and L stands for last. I'll do one parent genotype and maybe you will understand how this was done:


GENOTYPE: <em>PpTt</em>


<em>F- </em><em>irst of each pair. P and T</em>


P p T t


Gamete: <em>PT</em>


<em>O </em><em>- utside allele of the pair. P and t</em>


P p T t


Gamete: Pt


<em>I - </em><em>inside alleles of the pair. p and T</em>


P p T t


Gamete: pT


<em>L</em><em>-ast or end allele of each pair. p and t</em>


P p T t


Gamete: pt

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3 years ago
the mutation of the brca1 gene normally functions to ensure? a)breast cancer cells duplicate b)suppress tumor function c)the per
DedPeter [7]
I believe the answer is B!
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