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Arlecino [84]
2 years ago
14

A population of 1,000 birds exists on a small Pacific island. Some of the birds are yellow, a trait determined by a recessive al

lele. The others are green, a trait determined by a dominant allele. A hurrican on the island kills most of the birds from this population. Only ten remain, and those birds all have yellow feathers. Which of the following statements is true regarding the hypothetical situation?A. Assuming that no new birds coome to the island and no mutations occur, future generations of this population will contain both green and yellow birds.B. The hurricane has caused a population bottleneck.C. This situation illustrtes the principle of adaptive radiation.D. This situation illustrates the founder effect Or, The ten remaining birds will mate only with each other, and will contribute to gene flow in the population.
Biology
1 answer:
Marysya12 [62]2 years ago
4 0

Answer:

B. The hurricane has caused a population bottleneck

Explanation:

When there is a sudden reduction in the size of a population due to some unfavorable environmental conditions, the population is said to have experienced bottleneck. Bottleneck mostly results in genetic drift and changes the allele frequencies in the population. It is caused by some natural disasters or adverse conditions such as a hurricane.

In the given example, the hurricane removed all the birds with green feathers from the population and also has reduced the population size from 1000 to 10. Therefore, it represents the population bottleneck.

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The Coriolis Effect is caused by Earth’s uneven distribution of heat AND ________________.
SCORPION-xisa [38]

The rotation of the earth

The Coriolis Effect is caused by Earth’s uneven distribution of heat AND the rotation of the earth

Explanation:

Due to the spherical nature of the earth, when it spins, around its axis, different latitudes spin at different rates. The nearer to the pole you get the slower the earth’s spins (approx 0.00008 kilometers/hr), while this spin is fastest at the equator ( approx1,600 kilometers/hr). Due to this differential spin, ocean and winds currents (while they move polewards due to convection) are deflected as they move towards the pole from the equator. Towards the North, they are deflected westwards while towards the South they are deflected eastwards.

Learn More:

For more on Coriolis effect check out;

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7 0
2 years ago
Biological and environmental influences that are similar for individuals in a particular age group, regardless of where they are
Flauer [41]

Answer:

age-graded

Explanation:

Age-graded influences are biological and environmental events that influence the dynamic interaction between an individual and their environment at certain ages of the individual’s course of life. They are events that are expected to occur in a particular setting based on chronological age. For example, depending on the cultural settings of an individual, an individual is expected to graduate high school at a certain age, or get married at a certain age. Another example is puberty and menopause which are biological influences that are age-graded.

7 0
2 years ago
Fruit flies have a diploid number of 8, and honeybees have a diploid number of 32. In which case will crossing over have greater
Yanka [14]

Answer:

            The correct option is A.

Explanation:

              As we know that genetic variation that result from crossing over depend on the number of genes and their alleles. When there are more genes in genome the chances of polymorphic loci will increase, which will result into more genetic variation during crossing over.

Forexample:

                    Drosophila melanogaster is a common fruit fly having diploid number of 8 chromosome composed of 122,653,977 base pairs, and about ~17,000 genes.  Honey bees have diploid number of 32 chromosomes composed of approximately 2360000 base pairs, and 10,000 genes.    

Conclusion:

                      As fruit fly genome contain more genes and polymorphic loci, so genetic variation is more likely to be greater in fruit fly.


5 0
2 years ago
Daniel is studying feeding relationships in a neighborhood pond. He observes several organisms that feed on one another, and he
vichka [17]

So given the suggested food chain of algae-snail-sunfish-heron we can conclude that this food chain is heavily dependent on the process of photosynthesis.

The algae is the only of the organism that are directly dependent of the photosynthesis for their survival, while the snail, sunfish, and heron, and indirectly dependent on it.

Since we are talking about a food chain, in essence it means that all organism are connected through one another. So the algae perform photosynthesis for its own survival, the snail is using the algae is a food source, the snail is later eaten by the sunfish, and the sunfish goes on the menu of the heron.

If the algae, by some scenario, are not able to perform photosynthesis, than they will die off, and if they die off, than the snail will die off because of lack of food, if the snail dies off, along with it dies off the sunfish because of lack of food, and if the sunfish is out of the scene, the heron goes as well.

So we can conclude that the process of photosynthesis is of crucial importance for the survival of all four species, be it directly or indirectly.

6 0
2 years ago
Black widow spiders are considered the most venomous spiders in North America. They are roughly 1.5 inches long. Black widows ha
Zolol [24]

The black widow spider is an invertebrate. Its skeleton system hangs outside its body. The only difference between a vertebrate and invertebrate is the presence of backbone or a similar kind of structure with in the body. In case of black widow spider, the internal structural element is missing.  Its skeleton system can be classified as exoskeleton.  

 

7 0
2 years ago
Read 2 more answers
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