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sergey [27]
3 years ago
12

Choose all the answers that apply.

Biology
1 answer:
Nadya [2.5K]3 years ago
7 0
The first one is contour plowing

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List three characteristics that determine the structure of aquatic ecosystems.​
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Depth, flow, temperature, and chemistry of overlying water
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In which reproductive cycle of the virus does the viral DNA integrates with the host DNA?
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Bacteriophages have a lytic or lysogenic cycle.

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What is the mRNA sequence?
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Human ABO blood type is determined by a single gene that comes in 3 distinct alleles: IA , IB , and i. The IA and IB alleles are
alexandr402 [8]

Answer:

given, mother and father are heterozygotes.

let, father has B blood group and mother has A blood group.

then their heterozygous  genotypes are --

father = iB, iO  and mother = iA, iO

punnett square will be,

        iB        iO

iA     iA iB     iA iO

iO     iB iO    iO iO

the genotypes of their progeny will be, iAiB ,  iAiO ,iBiO and iOiO

and phenotypes will be 3 are heterozygous and 1 is homozygous.

5 0
3 years ago
The sharp reduction of numbers of a population and with it the gene pool through a severe epidemic is an example of :
Mademuasel [1]

Answer: <em>The Bottleneck Effect</em>

Explanation:

A Bottleneck effect is the sharp reduction of numbers of a population through environmental effects or human activity. It causes a loss of the genetic pool and its variety; genetic variation lowers and increases with time as random mutations occur.  

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