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Stells [14]
3 years ago
9

Why do ecosystems need a constant input of energy from an external source

Biology
1 answer:
Alja [10]3 years ago
3 0
The producers need energy to sustain life and sustain an ecosystem.
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some heterozygous alleles create variations in expression so that there is not a clear dominant or recessive allele true or fals
Simora [160]

Answer: False

 The variations in expression depends on how genes code for proteins that would specify whether it will be dominant or recessive allele.   Within a population, there may be a number of alleles for a given gene and these differences can cause variations in the protein that is produced. The change in protein expression affect traits due to the variations in protein activity or expression that produce different phenotypes.

<span>Moreover, individuals that have copies of different alleles are known as heterozygous and individuals that have two copies of the same allele are referred to a homozygous. The expression patterns observed in inheritance will depend on whether the allele is found on an autosomal chromosome or a sex chromosome, and on whether the allele is dominant or recessive.</span>

 

7 0
4 years ago
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The following diagram shows the branching tree diagram for some animals.
Leni [432]

Answer:

Shark and a Chimpanzee

7 0
3 years ago
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Match the causes with their effects
VikaD [51]

Effect: Radiogenic heat released- Cause: convection currents cycle through magma.
2.) Effect: Earth has a powerful magnetic field- Cause: Iron in earths outer core swirls due to convection currents.
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: ) I think this is right
8 0
3 years ago
Consider the classification levels of a honey bee.
lesantik [10]
The answer is B.) Insecta.
7 0
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All the alleles of a gene or genes present in a given individual.
timurjin [86]

Answer:

Genotype

Explanation:

Genotype refers to the genetic constitution of an individual. It represents all the allele combinations of a particular gene or alleles of various genes present in the genome of the organisms and constitutes the genetic makeup of an individual. For instance, if an individual has I^A and I^B allele for ABO blood type, the genotype of the individual for the ABO blood type gene is "I^A I^B". Likewise, "TT" and "tt" represent the genotype of a pea plant having both the same type of alleles for the stem height gene.  

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3 years ago
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