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laila [671]
2 years ago
12

Which of the following is considered the first receiver for the nicotine in a smocking person?

Biology
1 answer:
Katena32 [7]2 years ago
4 0

Answer:

i think nicotine travels through blood and we know blood reaches the right ventricle first

maybe right ventricle

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A eukaryotic cell has:
anastassius [24]

Answer:

The answer is A: a true nucleus and membrane bound organelles

Explanation:

i did a test and got it right

5 0
3 years ago
In Marker Analysis, how are STRs related to alleles? Be sure to define each term (STR and allele) and explain how the two result
Lisa [10]

Answer:

The number of STR repeats is unique and therefore it is considered as an allele of that <em>locus</em>

Explanation:

Short Tandem Repeats (STRs), also known as microsatellites or simple sequence repeats (SSRs), are short DNA sequences with a size of 1-6 nucleotide bases which may be many times repeated in tandem. STRs localize in specific regions of the genome (<em>loci</em>) and therefore they are molecular markers. Gel electrophoresis a technique used to separate DNA fragments based on their size. In consequence, the pattern of STR repeats or 'alleles' obtained by electrophoresis can be used to identify individuals. In a gel electrophoresis, STR markers produce different bands that run more slowly or faster on the gel in different lanes according to their size (e.g., more slowly >> higher size of the STR sequence), and thereby STR alleles are unique and serve to identify individuals.

3 0
2 years ago
Hello, please help, see attached photo :) thanks
Dmitry [639]

Answer:

a. Parents AA x Aa

b.

                     A               A

A                   AA             AA

a                   Aa              Aa

c. 50%

Explanation:

a. Parents AA x Aa

b.

                     A               A

A                   AA             AA

a                   Aa              Aa

c. 50%

5 0
2 years ago
Which type of mutation cannot occur in a child after birth?​
Lera25 [3.4K]

Answer:

Somatic Mutation

4 0
3 years ago
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Hereditary information for most traits is generally located in
Paha777 [63]

genes on chromosomes

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