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Lilit [14]
2 years ago
8

Some traits, such as earlobe attachment, blood type, and the presence or absence of dimples, have limited variation throughout t

he human population because they are controlled by a single gene. Other traits, such as skin color and human height, are widely variable throughout the human population because
Biology
2 answers:
zalisa [80]2 years ago
7 0

They are controlled by more than one gene

LekaFEV [45]2 years ago
3 0

Answer:

The correct answer would be "they are polygenic traits".

Polygenic traits are those which are controlled by at least two different genes.

As more than two genes are involved in controlling a single trait, so they show more variations as compared to the traits which are controlled by a single gene.

For example, height is controlled by at least three genes and thus six alleles are involved in regulating height.  

Polygenic traits often show a bell-shaped curve in a population.

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What scientific hypothesis could be used to support the theory that Wood Thrush decreases are not due to deforestation? could it
bulgar [2K]

Answer:

A scientific hypothesis can be described as a tentative statement which can either proved to be right or wrong through the support of the experiments being performed.

The possible hypothesis for the theory that Wood Thrush decreases are not due to deforestation can be as follows:

<em>'If the population of the Wood Thrush is not affected by deforestation, then the population of the Wood Thrush will remain the same when deforestation occurs in a particular area.' </em>

3 0
3 years ago
PLEAE HELP!!!!!!!!!!!!!!!!!!!
disa [49]
Gaurd cells are high for exchange of gad
8 0
3 years ago
Read 2 more answers
1. which pairing matches the structures shown in the cell diagrams with th
Mademuasel [1]

Explanation:

D. E: photosynthesis; D: cellular respiration

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent.

In the light reactions, occuring within the thykaloid, and stroma of the chloroplasts, water supplies the pigment chlorophyll with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the dark reactions, or Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’s cycle via the oxidization of pyruvate (through the process of glycoysis). The electron transport chain, in which oxygen functions as the terminal electron acceptor, occurs in both plants and animals. Respiration includes:

  • Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules.
  • The Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
  • The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular respiration at brainly.com/question/11203046

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

6 0
2 years ago
In winter many dogs grow a thick coat of fur. This is an example of
vesna_86 [32]
The answer is letter A. 

Dogs grow a thick coat fur during winter because they are adapting to change. Adaptations are the result of evolution in different living organisms. This process occurs amazingly through gene mutation but it takes a very long period in time. Adaptation processes occur to help species survive and thrive in the ecological balance of life.

Structural adaptations are physical features of an organism that adapted through time. An example of this is the thick coat of fur that dogs naturally grow to protect themselves from the change of the weather.
6 0
3 years ago
Read 2 more answers
What are the major factors that influence the rock cycle and changes in the rock?
mylen [45]
Weathering and Erosion.
3 0
3 years ago
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