9. Why did the Irish potato famine occur?
O A. The farmers planted a variety of potatoes that were infected by a potato blight.
O B. The farmers didn't plant enough potatoes.
O C. The farmers all planted the same potato variety, which was susceptible to a potato blight.
O D. Potatoes don't have enough nutrients to be a staple crop.

Apple seeds produced from pollen have 17 chromosomes, so these seeds will contain 34 chromosomes.

Seeds are embryonic plants that are covered with a protective coating on the outside. Seed formation is part of the reproductive process in seed plants, namely spermatophytes.

Inside the seed, there is an embryo formed from the meeting between the male gamete (stamen) and the female gamete (pollen). The embryo has its position inside the seed, precisely at the core of the seed, and is surrounded by existing food reserves.

Because the seeds come from the meeting of 2 gametes, the number of chromosomes is 34, half of the male parent and half of the female parent.

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Answer:Major groove

Explanation:

Transcriptional regulators bind most frequently at the major groove of DNA. The major groove is a wider, more accessible groove on the surface of the DNA helix, while the minor groove is narrower and deeper. Transcriptional regulators, which are proteins that bind to DNA and regulate gene expression, often bind to specific sequences of DNA in the major groove to modulate the transcription of particular genes. A histone complex is a group of proteins that helps package the DNA into a compact structure called chromatin, while the primary supercoil is a twisted, spiral structure that forms when DNA is wrapped around histones.

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Answer: D. Warm and humid

Explanation:

Just know

Answer:

Warm and Humid (D)

Explanation:

im nervous on that one becasue humid also means hot but like wind so yeah

Yes, eco-friendly homes can reduce greenhouse gas emissions and have positive effects on biodiversity.

Biodiversity refers to the variety of living organisms, that are found in any ecosystem. During the development of the human lifestyle, there is a major loss of biodiversity is observed.

Nowadays, biodiversity is lost rapidly as a result of civilization, and different species of living organisms are becoming extinct because of pollution, habitat loss, invasive species, overuse, etc.

Therefore,  eco-friendly homes that reduce greenhouse gas, by using natural things could have positive effects on biodiversity.

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Put each item into the first, second, and third category of lines of defense. The initial line of defense is made up of the skin and mucosal membranes. Macrophages serve as the second line of defense.

Innate humoral immunity refers to innate immunity that is protein-based. The body's complement system, interferon, and interleukin-1 (which induces fever) are a few examples.

Antibody-mediated immunity is another name for homunculus immunity. B cells will develop into blood B cells, which can manufacture antibodies against a particular antigen, with the aid of helper T cells. The body's immune immune system responds to pathogen antigens that are in the environment or outside of the diseased cells.

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Answer:

Tyr-stop codon-Gly-Leu-Ile (5'3' Frame)

Explanation:

Transcription is the process by which a specific fragment of DNA (i.e., a gene) is used as template to synthesize an RNA molecule, typically a messenger RNA (mRNA), which is then used as template to synthesize a protein in the ribosomes by a process called translation. During translation, each triplet of nucleotides (i.e., each codon) in the mRNA is read in order from the 5' end to the 3' end to add an amino acid to the nascent polypeptide chain. This 'genetic code' is not overlapping because each codon specifies one of 20 amino acid total possible and 3 stop codons (UAA, UAG, UGA). In this case, the second codon "TGA" in DNA or "UGA" in RNA (Uracil always replaces Adenine during transcription) is a stop codon that indicates the end of mRNA transcription.

Foxes can be red or silver, have different shaped teeth and hunt in different ways.These differences are examples of variations.

Any difference in cells, individuals, or populations of organisms of any species that may be attributed to genetic differences (genotypic variation) or to the influence of environmental conditions on the manifestation of genetic potentials is referred to as variation in biology (phenotypic variation).

Genetic variation refers to individual differences that are passed down from parents, such as eye, hair, and skin colour.

Environmental variation, which includes scars and tattoos, refers to individual variances that are not inherited but rather result from the environment in which the organism lives.

Genetic and environmental variance refers to individual variability in traits like height and weight that are influenced by both genetic and environmental variables.

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Answer:

The metabolic pathway you described involves a series of chemical reactions that convert one substrate into the next substrate until the final product is formed. If the enzyme that acts on substrate 2 is not produced within the cell, the reaction that converts substrate 1 into substrate 2 would not occur. This would cause a block in the pathway, as substrate 2 would not be available for the enzyme that converts substrate 2 into substrate 3.

Explanation:

The metabolic pathway you described involves a series of chemical reactions that convert one substrate into the next substrate until the final product is formed. If the enzyme that acts on substrate 2 is not produced within the cell, the reaction that converts substrate 1 into substrate 2 would not occur. This would cause a block in the pathway, as substrate 2 would not be available for the enzyme that converts substrate 2 into substrate 3.

As a result, the amount of product produced would be severely decreased. Because of the missing enzyme, substrate 2 would not be converted into substrate 3, and subsequently, substrate 3 would not be converted into the final product. If this key enzyme is not present, the entire metabolic pathway would be halted at the step involving substrate 2, causing the cells to be unable to produce the final product and creating a bottleneck in the metabolic pathway.

It's important to remember that enzymes are catalysts, they speed up the reactions of the metabolic pathway and ensure the reactions occur at appropriate rates to support life, even a small change in the enzyme activity can affect the entire pathway and alter the final product quantity and quality.

Answer:

C. Half of their sons and none of their daughters could have DMD.

Explanation:

DMD is a recessive disorder carried on the X chromosome and it is sex-linked. This means that the gene for DMD is located on the X chromosome and it affects mostly males.

If a woman is a carrier of DMD, it means that she has one copy of the mutated gene and one normal copy, and she does not show any symptoms of the disorder.

If a man without the disorder has children with this carrier woman, half of their sons will inherit the mutated X chromosome from the mother. Therefore, they will have the disorder and half of their sons could have DMD.

Since, Females have two X chromosomes, and therefore, if a daughter inherits the mutated X chromosome from the mother, the second X chromosome will be normal which will help in compensating the effects of the mutant one, hence they will be carrier of the disorder but will not show any symptoms. So none of their daughters could have DMD.

So, the outcome is: C. Half of their sons and none of their daughters could have DMD.

Answer:D

Explanation:

I think it is D because only the mother had it and not the father. I don't think the father could get DMD through sex either. So I think that none of their sons and half the daughters could have DMD because they inherited it from the mother.

Less dense and Darker in color are  two terms apply to continental crust rather than oceanic crust.

The both option are correct A and B.

When compared towards the continental crust, the oceanic lithosphere is thin, relatively young, simpler, and chemically richer in magnesium. The oceanic lithosphere is the chilled and crystallised melt fraction that results from the magmatism of the mantle there at semi ridges.

At subduction zones, the oceanic crust is forced back into the mantle, causing this process to happen. At mid-ocean divides and volcanic hotspots, new crust in the form of volcanic rock is created when old oceanic plate is submerged and melts into magma.

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Ruling a X-linked recessive pedigree involves analyzing the family history and pattern of inheritance of a trait or disorder to determine if it is likely to be inherited in an X-linked recessive pattern.

The disorder can be identified by:

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Answer:

B

Explanation:

The answer is B I think

Am not too sure but I think it is B

Answer:The author called it an uneventful chronicle because of the couple who most unwisely sacrificed for each other the greatest treasures of their house.

Explanation: This is not biology

There are two techniques by which living things imitate, agamic or sexual.

The male and female gametes contain half sets of genes which combine to form a zygote which develops into a fetus. Thus the genes in children are passed through gametes from the parents.

An egg from the mother and sperm from the father combine to form a fetus.  As a result, half of the baby's DNA comes from the mother and half from the father.

The genetic information required for the proteins is encoded in the DNA. There are various genes that code for different proteins. But all the genes do not code for their respective proteins at the same time, they are regulated by a mechanism that can switch the gene on and off as required. This is called gene regulation. This regulation results in the production of products by a pacific gene and is called gene expression.

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Answer:

The answer to this might be tetrad.

Explanation:

Suppose the mother and father are rabbits and the offspring are also rabbits. Let's consider two traits:

Trait 1: Fur Color - Black (B) is dominant, White (b) is recessive

Trait 2: Ear Shape - Long (L) is dominant, Short (l) is recessive

Mother: BBll (homozygous dominant for fur color, homozygous recessive for ear shape)

Father: BbLl (heterozygous for fur color, heterozygous for ear shape)

Punnett Square for Trait 1: Fur Color

B | B

b | b

B | b

b | b

All offspring are heterozygous for fur color (Bb)

Punnett Square for Trait 2: Ear Shape

L | l

l | l

L | l

l | l

All offspring are heterozygous for ear shape (Ll)

Based on the information, the mother was homozygous dominant for fur color and the father was heterozygous, so all babies are heterozygous for fur color.

The mother was homozygous recessive for ear shape and the father was heterozygous, so all babies are heterozygous for ear shape.

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Answer: According To my Knowledge if u apply 500 N Force And atleast 2cm Or around 38 Seconds

Explanation:

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Answer:

Plant leaves and stems growing away from light due to phototropism.

Plant roots growing away from a water source due to hydrotropism

Explanation:

When we are talking about tropism, it is refer to as the response or directional growth or response of plants to stimulus.

We have positive and negative tropism.

The negative tropism occur when plants grow away from the stimulus while positive tropism is when plants grows towards the response of stimulus.

Therefore from the question, negative tropism are

Plant roots growing away from a water source due to hydrotropism

Plant leaves and stems growing away from light due to phototropism.

Answer:

Plant leaves and stems growing away from light due to phototropism.

Plant roots growing away from a water source due to hydrotropism

Explanation:

In general, hydrolysis is calculated as carbohydrates  Polymer + Water Monomer + Monomer. Two amino acids through a condensation reaction form a peptide. Hydrophobic compounds can't be dissolved in water or combined with it.

A covalent link is formed between the carboxyl carbon of one amino acid and the amine nitrogen of the second amino acid when two amino acids mix in a condensation process.

Hydrolysis is the term for the digestive process. These lengthy sugar chains, or polymers, are disassembled into their constituent monomers during hydrolysis.

Therefore, a compound known as a dipeptide is created when amino acids come together.

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The evolutionary relationship is stronger the more similarity. The taxonomical hierarchy's lower levels show more similarity. Thus, the organisms of the same species exhibit the greatest degree of similarity.

Taxonomic hierarchy is an organizational structure used to classify or categorize living organisms.

Of course, organisms that belong to the same order will have a closer evolutionary bond than those that belong to the same phylum alone. Taxonomy groups organisms in various ways, as we all are aware. Kingdoms are the highest level of classification, followed by phyla, classes, orders, families, and species. The similarities between organisms will become more specific with each succeeding unit. In other words, when organisms are further subclassified, they share similar traits.
The order of organisms belonging to the same phylum is not required. The class, phylum, and kingdom of any two organisms from the same order, however, will always be the same.
For instance, the cockroach order Blattodea and the human order Primates. These two belong to the phylum chordata. But we are aware of the differences between cockroaches and people.
However, another member of the primate order, such as the monkey and the chimpanzee, have stronger evolutionary ties to humans and share more traits with them.
Therefore, the evolutionary relationship is stronger the more similarity. The taxonomical hierarchy's lower levels show more similarity. Thus, the organisms of the same species exhibit the greatest degree of similarity.

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Answer:

Sinkholes can occur when excessive water use lowers a water table and weakens the substrate.

Explanation:

There are various causes for sinkholes, but all are related to water and how this can affect the soil. One of the causes of sinkholes is the excessive use of water. Excessive use lowers the volume of water in aquifers. As a consequence, the substrates that are above the aquifer change. They can not support large amounts of weight, leading to a sinkhole and soil with low permeability.

Calico is a coat color found in cats that is caused by sex-linked co-dominant alleles.

The calico cat displays a mixed color of red and black, depending on which of her two X chromosomes is inactivated. The allele that codes for orange hair color is dominant, while the black color allele is recessive. In cats, the X chromosome carries the gene that determines coat color, and calico cats have two different versions (or alleles) of this gene. One allele produces orange fur, the other produces black fur.

Codominance actually means that neither allele can block or camouflage the expression of the other allele. Co-dominance can also occur in less obvious traits such as blood type.

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Viral infection, mutagen exposure, or errors in DNA replication during cell division can all lead to mutations. Viral infection, mutagen exposure, or errors in DNA replication during cell division can all result in mutations.

Changes to an organism's DNA sequence are referred to as mutations. Somatic mutations those that take place in body cells cannot be passed on to progeny, whereas germline mutations those that happen in eggs and sperm can.

When the amount or arrangement of nucleotides in a gene is altered, mutations result. A nucleotide can be doubled, deleted, altered, replaced, or any combination of these changes. In general, mutation has little to no impact, but when it does, the change may be fatal or result in disease.A beneficial mutation will rise in frequency within a population until it becomes the norm.

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Answer:

Other guy is right

Explanation:

i got 100