Answer:
In Mitosis the cell is diving in two to make 2 exact copies. You need to double the DNA to make sure you have enough DNA for each daughter cell
Explanation:
Evolution is change in a population over time and includes the gene pools of that population. How does biogeographic
isolation allow for the change of gene pools over time?
O Biogeographic isolation affects the random changes that take place within gene pools.
O Biogeographic isolation causes changes in gene pools that result from populations being separated.
O Biogeographic isolation determines who will win competition for mates
O Biogeographic isolation determines the time that populations will breed
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Which of the following is not a way that the environment can influence traits?
the presence of toxins in the environment
through epigenetic factors
expression of the dominant trait
through variation in temperature
Answer:
The correct answer is - expression of the dominant trait
Explanation:
The ineraction of the genes such as dominant and recessive trait are incorporated in the genes and not influence by the environmental condition. These interaction are by the de noo mutations or due to the error in gene expression.
The environmental conditions like toxins cause alteration or mutation in the gene expressions. Temeprature or epigentic conditions are also the factor the can cause influence to traits.
In the compound microscope, If you see bacteria move to the right,
this bacteria on the slide, really move to:
O a. Left
b. Downward
on
c. Upward
O d. Right
Clear my choice
Answer:
a
Explanation:
In a compound microscope, if a bacterium moves to the right, the bacterium on the slide, in reality, moved to the left.
This is because the optical system of the compound microscope is designed in such a way that the lenses change the orientation of the image of objects when viewed.
The system of two lenses - the objective and the eyepiece - produce inverted images of objects on slides. Hence, when an object on the slide under the compound microscope moves to the right, it is seen as moving to the left to the viewer and when it moves up, it is seen as moving down by the viewer.
The correct option is, therefore, a.
How does hunting help balance nature? o Hunting allows producers to over populate. O Hunting provides more food for decomposers. Hunting limits the amount of top predators found in the food chain. o Hunting limits the amount of organisms found in each link of the food chain.
Ann is observing the temporal bone and locates the jugular foramen and the jugular fossa. What two types of bone markings has she identified?
A. An extension and arounded process
B. A rough elevation and analytiat surface
C. A hole and a depression
D. A sit and an expanded end
Answer:
C. A hole and a depression
Explanation:
The jugular foramen is located at the base of the skull, it is oval in shape and from there emerges the internal jugular, which after emerging this intracranial vein this same forms the jugular fossa which is where it rests.
Identify the organ shown below:
A. Uterus
B. Ovaries
C. Vagina
D. Fallopian tubes
The organ that is shown in the image is considered to be the uterus.
What is the uterus?It is the organ at the lower body of the women in which the offspring should be conceived and it should be gestated prior to the birth. It lies between the rectum and the bladder. Here the ovaries should generated the egg that should be travelled via the fallopian tubes.
Therefore, we can conclude that the option a is correct.
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the genes assort independently.
short, black fur long, black fur short, brown fur long, brown fur
Answer: All answer choices. Short, black fur.. long, black fur.. short, brown fur & long, brown fur
Explanation:
Answer:
Two true-breeding guinea pigs were crossed. One had short, black fur, and the other had long, brown fur. Fur length is carried on one gene and fur color on another. Select all offspring phenotypes that you would expect in later generations if…
. . . the genes are nearby on the same chromosome.
short, black fur
long, black fur
short, brown fur
long, brown fur
A short-haired black guinea pig and a long-haired brown guinea pig.
Photos by Katrina and Ilovebutter
. . . the genes assort independently.
short, black fur
long, black fur
short, brown fur
long, brown fur
Explanation:
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Which of the following organelles would not be present in the nerve cell of the humpback whale?
A. Plasma membrane
B. Cell wall
C. Mitochondria
D. Lysosome
Answer: b
Explanation:
9. What is the function of nucleic acids? *
a) store genetic information
b)store energy (long-term)
Oc)store energy (short-term)
O d)build skin, hair, nails, muscles
Answer:
a option
Explanation:
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Having freckles is a dominant trait, and not having freckles is a recessive trait. Which set of parents will not have any children with freckles? A. A mother with FF and a father with ff O B. A mother with Ffand a father with Ff O c. A mother with ff and a father with ff
As freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait, i.e., ff. The correct option is C.
What are recessive traits?Recessive trait is a trait that really should be transmitted by both parents in order to be present in the offspring. Recessive features might exist in a person's DNA but not manifest in that individual.
As in the given case, F denotes dominance, and f denotes recessive character. Dominant trait always superimpose over the recessive one.
So, as freckles are a dominant trait, they will not occur in the children with a homozygous recessive trait i.e., ff.
Thus, the correct option is C.
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Answer:
c
Explanation:
Which of the following plant is associated with Chronic Obstructive Pulmonary Disease in horses?
a.Eupatorium adenophorum
b.Lantana camara
c. Quercus griffithi
d. Bracken Fern
Organisms that have very different taxonomies (e.g. are from different families) but look very similar represent an example of
dont answer if you ont know it
The more bonds an atom can make, the more likely it is to combine with other atoms in different ways.
Which element is most likely able to make the greatest variety of bonds?
nitrogen
hydrogen
oxygen
carbon
Answer:
hydrogen
Explanation:
this is because hydrogen has a valency of 1 and has only one electron in it's outer most energy level thus able to bond with many elements easily
white eyes are recessive in flies. can two red eyed flies have white eyed offspring
Answer:
Considering that white eyes are a recessive trait in flies, it is possible for two red-eyed flies to have offspring with white eyes only if both are heterozygous for this trait.
Explanation:
For two individuals with dominant phenotype for a trait to have offspring with the recessive trait, both must have a heterozygous genotype.
In the case of the characteristic eye color of the flies :
Red eye (R) is dominant trait. White eyes (r) is the recessive trait.When both parents are heterozygous, their genotype is Rr
In Punnett Square it can see the result of the crossing of these individuals:
Punnett Square :
Rr X Rr
Alleles R r
R RR Rr
r Rr rr
In the offspring, the probabilities are:
50% heterozygous individuals Rr, with red eye phenotype. 25% pure dominant individuals RR, with red eyes 25% individuals with the recessive rr genotype, white eyes.This is the possibility of two red-eyed flies having white-eyed offspring.
Question 8 (3 points)
Using the diagram below, identify the ONLY portion of the nucleotide that is not the same in every piece of DNA. (phosphate, sugar, or base)
Answer:
Base
Explanation:
Deoxyribonucleic acid, DNA, is one of the four major biomolecules in living organisms. It is a polymer made up of monomers called NUCLEOTIDES. The nucleotides that make up a DNA molecule is composed of three substances namely: Sugar (deoxyribose), nitrogenous base, and a phosphate group.
However, among these three components of the nucleotide monomer, NITROGENOUS BASE is the only portion that is not the same in every DNA molecule. There are four nitrogenous bases in nature viz: Adenine, Guanine, Cytosine and Thymine. These four bases can be alternated in a DNA molecule.
Note that, phosphate group and deoxyribose sugar are constant in every DNA.
hi guys I need help with those questions can somebody help me please am doing a science fair project
the problem is CAN PLANTS STOP SOIL EROSION?
what can we put a title for this problem
what is the hypothesis for this problem
please help
Answer:Name for project.SOIL SAVERS. plants can stop soil erosion because the roots in plants keep the soil intack. this has already proven true by scientists and farmers. planting plants that has a large root system keeps more soil in. planting carrots and potatoes does not help keep the soil still because they have small root system.
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Answer: The answer is a screw
Explanation: first the lever wouldn't be right, the pulley wouldn't be either since it isn't on there. So it would be the screw
Nuclear _________ reactions convert protons into hellum; thus, becoming the source of all energy radiated by the sun.
Answer:
Nuclear Fusion Reactions
What’s the relationship between ants and large blue butterfly larva?
a) competition
b) predation
c) mutualism
d) commensalism
Answer:
its D commensalism, one benefits from it and the other gets no harm
Explanation:
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Edwin wrote the following notes about static electricity. When an uncharged object is placed close to a charged object, the objects can attract or repel each other. When two electrically charged objects are placed next to one another, the objects can also attract or repel. What statement will correct the error in Edwin's notes?
A) An electrically charged object needs to touch an uncharged object before they attract or repel.
B) When an electrically charged object comes close to an uncharged object, it will attract it.
C) If an electrically charged object is near an uncharged object, it will repel it.
D) When two electrically charged objects are placed close together, they only attract.
Answer:
it's An uncharged object.
if its not charged the electrically wont go on it
Explanation:
The statement that will correct the error in Edwin's notes is as follows:
An electrically charged object needs to touch an uncharged object before they attract or repel.Thus, the correct option is A.
How do electrically charged objects produce attraction?The electrically charged objects produce attraction of oppositely charged objects. For example, if a positively charged object and a negatively charged object bring close to each other, they interact with one another. Their forces act in the same direction. i.e. from the positive to the negative charge.
There is an interaction between two oppositely charged objects required in order to furnish attraction, while there is an interaction between two identical charged objects required in order to furnish repulsion.
Whether it is attraction or repulsion, it must be required that an electrically charged object needs to touch an uncharged object.
Therefore, the correct option for this question is A.
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The bacterial RecA protein (and its counterpart in eukaryotes, Rad51) are involved in, and help direct: ________.
a. chromatin packing and heterochromatin formation
b. Apurinic site repair
c. Post-transcriptional regulation
d. Strand invasion
Answer:
The appropriate alternative is Option b (Apurinic site repair).
Explanation:
Although these antibodies eliminate compromised DNA bases through midriff of N-glycosylic attachments, maintaining perhaps an apurine or perhaps even apyrimidine site today.RecA connects towards DNA damage as well as precipitates recombinant restoration through doulas branch fracture pairing or daughter strand difference restore.Other solutions aren't relevant to the situation in question. So that the answer above is the right one.
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What major factors play a role in global warming?
Answer:
1. Carbon dioxide levels in the Earth's atmosphere have been steadily increasing.
Explanation:
This cell part contains an eukaryotic cell's DNA. *
O Endoplasmic Reticulum
O Ribosomes
O Golgi Apparatus
O Nucleus
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If you wanted to study dolphins and porpoises, which zone would you want to investigate first?
Answer:
Answer is Sublittoral
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If a female fruit fly is heterozygous with the allele for white eyes being recessive and the red eyes being dominant on the X-chromosome. She is crossed with a hemizygous red eyed male, what would be the expected ratio of male and female phenotypes if they were bred together?
Answer:
100% red eyes because there is 50% AA and 50% Aa.
Explanation:
To find the expected ratio of male and female phenotypes if they were bred together, you need to make a punnett square/table.
Female: A a
"A" is white eyes, which is RARE. "a" is red eyes, which is COMMON.
Male: A A
"A" is red eyes, which is COMMON.
Multiply Aa x AA by a punnett square.
GUIDE:
1. AA is common and does not carry the recessive gene of being white-eyed. 2. aa is rare and carries the recessive gene of being white-eyed.
3. Aa is common as being red-eyed since being red-eyed is dominant, but carries the recessive gene of being white-eyed.
6. The diagram shows a complete circuit with a battery and a buzzer making
noise. This circuit works by transforming - *
O F. chemical energy to electrical to sound.
G. electrical enengy to thermal to light.
O H. sound energy to electrical to chemical.
O
J. mechanical energy to electrical to sound.
138) Six-year-old Matthew broke his femur and one of his epiphyseal plates was damaged. Explain the role of the epiphyseal plate in longitudinal growth and predict the effects of a damaged epiphyseal plate on his future longitudinal growth.
Answer:
The function of the physis or growth plate is to allow the growth in length of the bones (both long as short) through the endochondral ossification process.
Explanation:
The epiphyseal plates are areas of active growth of new bone at the ends of the bones, made up of cartilage that hardens once the child is fully developed. Epiphyseal plates help determine the length and shape of the adult bone eventually. It is the last part of the bones to harden, and therefore they are vulnerable to fractures. The complication of the involvement of the growth plate is the deformity or lack of growth of the bone, leaving the limb twisted or shorter than the contralateral one.Growth disturbances are more frequent when the affected area is very large or when it involves the area of the knee joint. In cases of shoulder or wrist involvement, deformities rarely occur. The alterations are more common when the lesions occur in younger children, because they have a longer growth period.