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Stella [2.4K]
3 years ago
10

Help brainliest involved!!:)

Biology
2 answers:
Ymorist [56]3 years ago
4 0

Answer:

the anwser is <u>B. Scrapings from his teeth</u>

Explanation:

hope this helps :)

marin [14]3 years ago
4 0

Answer:

Scrapings from his teeth

Explanation:

He described 'moving animals' in the plaque between his teeth

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In the situation of science positive means
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Something with higher electric potential than the ground or a defined null or neutral point. Electrons flow from the positive point in a circuit. See also negative, null, and potential.
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3 years ago
Different ratios occur in crosses with single gene pairs or two gene pairs. What types of ratios are likely to occur in crosses
likoan [24]

Answer:

Genotype ratio: 1, 1:1, 1:2:1

Phenotype ratio: 1, 3:1

Explanation:

Single gene pair cross is also known as monohybrid cross. This means that only one gene usually with two alleles is observed and it express one trait.

For example, if we name the gene for a certain trait with A, the possible genotypes are AA (dominant homozygous), aa (recessive homozygous) and Aa (heterozygous). Possible crosses are:

P: AA  x  AA

F1 : all of them are AA

The same is with aa x aa (all of the offspring are with aa genotype)

P: AA  x  Aa

F1: AA Aa AA Aa  (genotype ratio 1:1) (phenotype ratio 3:1)

The same genotype ratio is  in aa x Aa (offspring will have aa Aa aa Aa-(genotype ratio 1:1) (phenotype ratio 1:1)

P: Aa x Aa

F1: AA Aa Aa aa (genotype ratio 1:2:1) (phenotype ratio 3:1)

P: AA x aa

F1: Aa Aa Aa Aa (1)

5 0
3 years ago
How do enzymes help join two substrate molecules together to form a product?
Len [333]

Answer:

Enzymes bind with chemical reactants called substrates. ... In others, two substrates may come together to create one larger molecule. Two reactants might also enter a reaction, both become modified, and leave the reaction as two products. The enzyme's active site binds to the substrate.

7 0
3 years ago
Could someone help me out on this problem
Contact [7]
I would go with the first option
3 0
3 years ago
Help help help help please
inessss [21]

Answer:

its day 14 and 15 . relative formation concernatural c

Explanation:

how do I know?

I just know

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