What do all members of the swine species always have in common? They always have the same number and kinds of chromosomes. They are always preyed upon by the same predators. They always occupy the same habitat at the same time. They always occupy the same position in the food web no matter where they live.

Answer:

Members of the swine species always have the same number and kinds of chromosomes

Explanation:

The swine species always have their food habits in common. They are omnivorous and they also due to ancestry have the typical type of genes and chromosomes inscribed in it. Hence swine are used in research industry nowadays like dogs and monkeys.

Wild boars, hogs and pigs all have just small differences externally. Their anatomy and physiology are identical. They are all mammals. They are highly intelligent and talented ones. They have their physiology identical to ours which helps in research scientist to experiment and finds cure for human.

Answer:

biological definition of species, which works for sexually reproducing organisms, is a group of actual or potential interbreeding individuals. There are exceptions to this rule. Many species are similar enough that hybrid offspring are possible and may often occur in nature, but for the majority of species this rule generally holds. The presence in nature of hybrids between similar species suggests that they may have descended from a single interbreeding species, and the speciation process may not yet be completed.

Given the extraordinary diversity of life on the planet there must be mechanisms for speciation: the formation of two species from one original species. Darwin envisioned this process as a branching event and diagrammed the process in the only illustration found in On the Origin of Species (Figure 1a). Compare this illustration to the diagram of elephant evolution (Figure 1b), which shows that as one species changes over time, it branches to form more than one new species, repeatedly, as long as the population survives or until the organism becomes extinct.

Explanation:

For speciation to occur, two new populations must be formed from one original population and they must evolve in such a way that it becomes impossible for individuals from the two new populations to interbreed. Biologists have proposed mechanisms by which this could occur that fall into two broad categories. Allopatric speciation (allo– = “other”; –patric = “homeland”) involves geographic separation of populations from a parent species and subsequent evolution. Sympatric speciation (sym– = “same”; –patric = “homeland”) involves speciation occurring within a parent species remaining in one location.

Biologists think of speciation events as the splitting of one ancestral species into two descendant species. There is no reason why more than two species might not form at one time except that it is less likely and we can conceptualize multiple events as single splits occurring close in time.

Allopatric Speciation

A geographically continuous population has a gene pool that is relatively homogeneous. Gene flow, the movement of alleles across a species’ range, is relatively free because individuals can move and then mate with individuals in their new location. Thus, an allele’s frequency at one end of a distribution will be similar to the allele’s frequency at the other end. When populations become geographically discontinuous, it prevents alleles’ free-flow. When that separation lasts for a period of time, the two populations are able to evolve along different trajectories. Thus, their allele frequencies at numerous genetic loci gradually become increasingly different as new alleles independently arise by mutation in each population. Typically, environmental conditions, such as climate, resources, predators, and competitors for the two populations will differ causing natural selection to favor divergent adaptations in each group.

How can two physically healthy parents produce a child with Down syndrome and a second child with Klinefelter syndrome?

One concept that supports the theory of evolution states that organisms best adapted for survival are the ones that will reproduce and pass traits on to future generations.
Adaptations that can be passed on do not include

A) The basic structure of the organism
B) the reflex actions of the organism
C) the manner in which the organism carries out respiration
D) techniques for hunting food taught by the parents of the organism

7. How is parasitism different from other types of symbiosis?

Help plz


Which statement best describes the flow of energy and the movement of chemical compounds in an ecosystem?

Energy flows out of living organisms and is lost, while chemical compounds remain permanently inside organisms.


Energy is transferred from organism to organism in a food chain, and chemical compounds are recycled


Energy flows into living organisms and remains there, while chemical compounds are transferred from organism to organism.


Chemical compounds flow in one direction in a food chain and energy is produced.

Which of the following invertebrates is most closely related to the vertebrates? Select all that apply.
1. echinoderms
2. cnidarians
3. arthropods
4. chordates

Need answer quick please thanks

1. There are
domains.
1
2
3
4

Blood types;
A man with type O marries a woman with type AB.
Several children were born.

1. What is the genotype of the man?
2. What is the genotype of the woman?
3. True or false? the mother of the man had type AB blood.
4. Could the mother of the woman have type O blood?
5. what fraction of offspring would have type B blood?
6. what fraction of the children would have type AB blood?
7.Could this couple have a child with type O blood?

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Why is taxonomy important to scientists?

What ratio of plants in the offspring would you predict from a Yy x Yy cross?

What is the main difference between Passive Diffusion and Active Transport?

A. Active uses protein channels

B. Passive goes from low to high concentration

C. Active always uses energy (ATP)

NEED HELP ASAP!!!!!!!!!!!!

What evidence did Wallace claim shows
that new species are modified forms of
old species?

Describe the borders of Israel after the 1948 War?​

The figure below shows a food chain that might exist in a meadow.
Meadow Food Chain
Owl
Green plants Beetle
Toad
Snake
Which organism is the primary consumer in this food chain?
А
owl
B
toad
с
beetle
plant leaf

New alleles can arise in both asexual and sexual reproduction.
Which of the following statements is TRUE based on the disadvantages of sexual and asexual reproduction.

A- Gametogenesis is the only source of genetic variation for sexual reproduction
B- This answer choice is wrong
C- Mutations are the only source of genetic variation for asexual reproduction
D- Meiosis is the only source of genetic variation for sexual reproduction

Which of these is MOST descriptive of a compartmentalized cell?

How does a mouse obtain energy for everyday functions? How might this look different compared to how an own obtains energy?

.
What is one reason why plants can grow in the tundra?
the ability to grow tall
a thin layer of active soil
a thick layer of permafrost
a ten-month long summer

A(n) what is a chemical produced by one animal to influence the
behavior of another animal of the same species?

Please Help with both. Will make sure to Mark You Brainliest & Thank your comment.

Thank You. (:

Tsunami waves are caused by earthquakes in the ocean floor. As the waves approach the shore, they usually grow in height. When this occurs, which aspect of the wave is changing?
A.
amplitude
B.
direction
C.
frequency
D.
speed
E.
wavelength

Which is the BIGGER (less specific) group? *
A. Phylum
B. Kingdom
C. Species

Video: Earth Day Every Day
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eText: Ecological Footprints
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rth Day Every Day
What were some of the environmental problems that inspired Earth Day?

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Summarize what causes an earthquake to occur.

Explain why tongue rolling ability is a discontinuous variation

HELPPP ASAP !! how are different natural disasters related? what different causes and effects do you know about?

Researchers used DNA sequencing techniques to find similarities of Hox genes in roundworms, arthropods, mollusks, echinoderms, cephalochordates, and vertebrates. What did they find out about these genes? Select all that apply. A. Hox genes provide information about evolutionary relationships. B. Similarities among Hox genes suggest that they all arose from a single ancestral gene that duplicated many times. C. Hox genes are regulatory genes that determine body plans of animals. D. Only some animals that have been tested have Hox genes, suggesting that Hox genes have no function and only evolved recently.

A zygote (the cell formed when an egg and a sperm cell initially fuse) is:
A) multipotent
B) pluripotent
C) totipotent
D) omnipotent