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bazaltina [42]
3 years ago
14

If there is another new infectious disease somewhere in the world, what do you think Canadian officials should do

Biology
1 answer:
lubasha [3.4K]3 years ago
6 0

Canadian  officials should check any people coming in if they have the disease so it doesn't come into Canada and infect people in Canada

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Two scientists produce two different cladograms for the same group of organisms. Explain how the differences are possible.
S_A_V [24]

Answer:

Due to different grouping style

Explanation:

There are two modes of classifying an organism due to which two different cladogram are produced-  

A) When the organisms are grouped together on the basis of similarities shared by them – Such species are named based on the name of older species and the newly discovered species sharing similar traits are kept under older species thereby dropping its own name.  

B) In the second method, the minute differences are observed in species to group them into several branches arising from one parent organism.  

4 0
3 years ago
If 1000 f2 offspring are obtained, how many flies of each phenotype are expected?
aniked [119]
<span>In Drosophila + indicates wild-type allele for any gene, m is mahogany and e is ebony. Female parents are m+/m+ and males are +e/+e. F1 are m+/+e, all wild type. F1 females are crossed with me/me males - the test cross. Offspring will be : non recombinant m+/me, mahogany wild type or +e/me wild type ebony. OR recombinant me/me mahogany ebony or ++/++ wild type. As the two genes are 25 map units apart, the percentage of recombinants will be 25% and therefore percentage parental types will be 75%. 75% 1000 is 750. There are two parental types, so you would expect 375 of each. Therefore, you would expect 375 m+/me and 375 +e/me. 25% of 1000 is 250 split between two recombinants =125 of each. Therefore you would expect 135 me/me and 125 ++/++</span>
7 0
3 years ago
Nails are made of:
Fudgin [204]

Answer:

keratin

Your nails are made of keratin

Keratin is a type of protein that forms the cells that make up the tissue in nails and other parts of your body.

Explanation:

6 0
3 years ago
Describe four factors that affect population size
strojnjashka [21]
Fertility Rate

Mortality Rate

Immigration

Emigration <span />
4 0
3 years ago
Subatomic particles in atoms that do not carry an electric charge are called
Serggg [28]
The correct answer is neutrons, they do not carry an electronic charge.

Hope this helps.
8 0
3 years ago
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