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4th- being more adaptive to the surroundings

Answer:

False, it can also be caused by mutations.

According to the gene interaction that is operating in the trait determination, the phenotypic ratios of the progeny produced when test-crossing a dihybrid are: a) 4:12, b) 8:8, and c) 12:4

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To answer these questions, the first thing you should notice by looking at the phenotypic ratios provided, is that there are two genes involved in the trait, and there is interaction between them.

Let us assume diallelic genes. A and B are the dominant alleles, while a and b are the recessive alleles.

In the three cases (a, b, and c), F1 individuals are dihybrid. Their genotype is AaBb.

Observing the altered phenotype proportions of the offspring can reveal which interaction is operating in the trait determination.

We can use the phenotypic ratio to determine the interaction, so:

When talking about epistasis, we are referring to an interruption.

The epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.

In Duplicate gene action, there are two genes involved in the expression of a phenotype, and the presence of at least one dominant allele is enough to produce the dominant phenotype. Phenotypic ratio 15:1.

So now, let us make the test-cross.

Note: You will see that the cross is the same in the three cases, but the phenotypic ratio changes according to the interaction.

Cross) dihybrid individual with h0m0zyg0us recessive one

Parental)           AaBb            x          aabb

Gametes)  AB, Ab, aB, ab             ab, ab, ab, ab

Punnett square)     AB            Ab            aB            ab

                 ab       AaBb        Aabb        aaBb        aabb

                 ab       AaBb        Aabb        aaBb        aabb  

                 ab       AaBb        Aabb        aaBb        aabb

                 ab       AaBb        Aabb        aaBb        aabb

F2) Phenotypic ratio

***Double recessive epistasis  ⇒  4:12

Both genes in recessive state inhibit the expression of the trait.

***Recessive epistasis  ⇒  8:8

In h0m0zyg0us recessive state, Gene A inhibits the expression of B.

***Duplicate gene action   ⇒  12:4

Only one dominant allele, either A or B, is enough to express the trait.

Phenotypic ratios:

a) 4:12 = 1:3

b) 8:8 = 1:1

c) 12:4 = 3:1

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Answer:

c. 2nd metacarpal

Explanation: is correct edg

Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own. Therefore, the correct option is (C).

Therefore, the correct option is (C).

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Question:

Which of the following statements best compares reproduction in viruses with reproduction in single-celled protists?

A. Viruses reproduce by releasing spores; single-celled protists reproduce by dividing in half.

B. Viruses require large colonies to reproduce; single- celled protists reproduce as individual cells.

C. Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own.

D. Viruses form haploid gametes when they reproduce; single-celled protists form diploid gametes when they reproduce

It's called excretion.

Explanation:

Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.

Answer:

Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.

Answer:

When digesting food, acids in your stomach help break down the food particles to easily travel into your intestines!

Answer:

there are 2 types of solid.

crystalline and amorphous

Explanation:

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions

In condensed matter physics and materials science, an amorphous or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal

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Transform faults are not limited to oceanic crust and whatever the over was; many of them are on continental margins. The best example is the San Andreas Fault on the Pacific coast of the United States.

Hope this helps!

Have a great day

Answer:

premarket tobacco application (PMTA) is an application that must be reviewed and approved by the Food and Drug Administration before a new tobacco product can be legally marketed in the United States.

Explanation:

Answer:

The lights higher on the light spectrum, like blue would have the fastest rate of photosynthesis because the energy is the highest. the green light would have the slowest rate because the chlorophyll inside of the leaves reflects green light, so it would not be absorbed as mich as the other colors. The color matters because the color or wavelength of light does affect photosynthesis, which is how plants can create their own food.

Answer: is going to be B

Answer:

A es la respuesta

Explanation: Espero que esto haya ayudado :)

Answer:

loops

Explanation:

.......................

Answer:

Explanation: Electrophoresis displays the entire DNA sequence, whereas fingerprinting allows you to quickly identify someone. But they have one thing in common: they are both so distinctive that it is nearly impossible for two persons to have the same fingerprint/DNA sequence.

Answer:False

Explanation: right on Edge

The statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true, as urban anomie theory suggests that the impersonal nature of city life leads to the breakdown of social bonds.

According to this theory, the fast pace of urban life, the diversity of populations, and the emphasis on individual achievement can lead to a weakening of social ties and a breakdown of social norms and values. As a result, individuals may feel disconnected from others and from society as a whole, leading to a sense of alienation and a lack of meaning in their lives. This sense of normlessness and detachment can extend beyond situations that require social involvement, such as interactions with neighbors or participation in community events, to other aspects of daily life.

Hence, the statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true.

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The statement 'more new species have evolved in coral reef habitats than in most other types of habitats.' is accurate. A coral reef is a hotspot of biodiversity.

A coral reef is a marine ecosystem composed of organisms (i.e., corals) that form a wall together (i.e., reef-building corals).

These reefs consist of many colonies of coral polyps, which held together by a calcareous material (i.e., calcium carbonate)

A coral reef is a hotspot of biodiversity because there are many different species that live and evolved in this type of habitat.

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Answer:

'more new species have evolved in coral reef habitats than in most other types of habitats.'

Explanation:

trust

Answer:

yes that's true

Explanation:

pls mark brainliest

Answer:

Third-level consumers are any organisms big enough to obtain energy by feeding off lower-level consumers. These are also called tertiary consumers. For example, in a forest ecosystem, snakes eat toads. Heron and large fish, such as bass and walleye, consume smaller fish, frogs and crayfish.

Explanation:

Answer:

The larger fishes like tuna, barracuda, jellyfish, dolphins, seals, sea lions, turtles, sharks, and whales are tertiary consumers  Explanation: They feed on the primary producers like phytoplankton and zooplankton, as well as secondary consumers like fish, jellyfish, as well as crustaceans.

Answer:

what do you mean by this question

?

Answer:

In East Asia, the goldfish is a relatively small member of the carp family

Explanation:

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Answer:

sister chromatids

Explanation:

Suppose that a cell is unable to replicate its DNA, the structure that will not be present in the cell is sister chromatid.

Sister chromatid refers to replicated chromosome that are genetically identical.

Prior to every cell division, a cell must replicate its DNA in order to have an even distribution of genetic material in the daughter cells.

The result of DNA replication is sister chromatids, which carry individual identical DNA.

Therefore, if a cell is unable to replicate its DNA, the structure that will not be present in the cell is sister chromatid.

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Answer:

C

Explanation:

Gun

Explanation:

it has caused many to die, yes the government brought that to help with security but it has gotten into Tue hands of those that have no value for human life. Take the case of the Boko harm in surgery in Nigeria, all of them are armed with Ak47's and they use it to kill innocent Nigerians not only that there are series of cases of accidental shootings AND that's how a life is lost. You can't really argue with me considering the fat that life is priceless. thank me later

Answer:

Stem cells have the capacity to proliferate and to differentiate into relatively mature cells of various types. Embryonic stem cells can become any organ in the body and do so when implanted into a blastocyst. In principle, then embryonic stem cells could be used to replace any organ in the body.

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Answer:

Estrogen

Explanation:

Estrogens are a group of hormones that play an important role in the normal sexual and reproductive development in women.

Estrogen is responsible for the development of these characteristics in the female. Therefore, option (A) is correct.

Estrogen, also known as oestrogen, is a class of sex hormone that is responsible for the growth and regulation of the female reproductive system as well as secondary sex characteristics. Estrone, estradiol, and estriol are the three primary endogenous estrogens that are responsible for the majority of the hormone activity associated with estrogen.

The growth, development, and physiological functioning of the human reproductive system are all controlled by estrogen. In addition to affecting the neuroendocrine and skeletal systems, this hormone also affects the adipose and cardiovascular systems. Estrogen is a vital component of the male and female reproductive systems and is primarily manufactured by the ovaries in females and the testes in males.

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