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Natali [406]
3 years ago
6

Explain and illustrate how the long-term survival

Biology
1 answer:
Alisiya [41]3 years ago
7 0

Answer and Explanation:

When there is limitation to resurces, there are behavioural activities that organisms perform like clustering, coiling, burrowing, migration, hibernation and aestivation.

Migration is seen in many homoitherms where there is movement over long distances to avoid unfavourable climatic factors and food shortage. During cold weather, large mammals survive by hibernating. They go into deep sleep and metabolic rate falls to the minimum required for maintaining the vital activities of the cells.

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A plant breeder has determined the following variances for yield of corn in his fields:
Law Incorporation [45]

Answer:

A. VG = 80

B. Broad sense heritability = 0.80

C. Narrow sense heritability = 0.30

D. Average yield = 430 Units

Explanation:

A. Given that

VA = 30

VD = 50

VI = assumed not available

Therefore

Total genetic variance (VG) = VA + VD

= 30 + 50

= 80

VG = 80

B. Given that

VP = 100

VG = 80

Broad sense heritability, H2 = VG/VP

= 80/100

= 0.80

C. Given that

VA = 30

VP = 100

Narrow sense heritability, h2 = VA/VP

=30/100

= 0.30

D. The difference in selection = 500 - 400

= 100

Recall,

Selection response is heritability multiplied by selection differential.

That is

R = h2S

Selection differential = 100

Heritability h2 = 0.30

Selection response = 0.30 × 100

= 30units

Therefore, expected average yield = 400 + 30

= 430 Units

6 0
2 years ago
Explain why species richness declines along an equatorial-polar gradient
Alborosie
<span>The closer you are to the poles of the Earth, the fewer ecological niches for species to fill. </span>
4 0
3 years ago
Name the groups of molecules that photosystems are made out of
pochemuha

Answer:

photosystem

Explanation:

7 0
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Replicate the following (write the complementary DNA strand);<br><br> ATT ACG CGC
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Answer:

GCC GTA TAT

Adenine pairs with guanine.

Cytosine pairs with thymine.

Hope it helps!

3 0
1 year ago
Read 2 more answers
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Extreme disturbances are complex events. The terminology used to identify them, such as 'hurricanes,' 'fires,' 'economic collapse,' 'war,' or 'drought,' is insufficient for advancing understanding about how they interact with, and affect, ecosystems, including SETS.
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2 years ago
Read 2 more answers
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