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Nuetrik [128]
3 years ago
11

Vaccinations were first used in what time period?

Biology
2 answers:
Art [367]3 years ago
5 0
C 1700-1800 hope this helps

miskamm [114]3 years ago
3 0
The correct answer is C) 1700-1800. Hope this helps.
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The correct answer is letter D
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3 years ago
What are the definitions of compression and tension
Law Incorporation [45]

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Explanation:

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4 0
2 years ago
A maize plant with genotype Aa Bb produces the following gametes 100 Ab 45 AB 106 aB 50 ab This tells us that the two genes are
bogdanovich [222]

Answer:

True

Explanation:

The linkage relation of two genes can be determined on the basis of calculating recombination frequency.

If the recombination frequency value is greater than 50% then the genes are not linked and if the value is less than 50% then the genes are linked.

In the given question, the  crossover gametes formed will be Ab = 100

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\dfrac{recombinant\ progenies}{ Total\ progeny}\times 100\\\\\dfrac{100 +106}{100+106+45+50}\times 100\\\\=\dfrac{206}{301}\times 100\\\\= 68.43\%

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Thus, True is the correct answer.

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Only anti-A antibodies are present.

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