Answers
Answer: Chiasmata are specialized chromatin structures that link homologous chromosomes together until anaphase I (Figs. 45.1 and 45.10). They form at sites where programmed DNA breaks generated by Spo11 undergo the full recombination pathway to generate crossovers. At a given chiasma, an exchange of genetic material can occur between both chromatids, what is called a chromosomal crossover, but this is much more frequent during meiosis than mitosis. In meiosis, absence of a chiasma generally results in improper chromosomal segregation and aneuploidy.
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Related Questions
Two parents decide to have a child. The parents plan to have their genes tested before they have their child to see if there is a possibility of their child having sickle cell, a recessive blood disorder. The parents find out they are both heterozygous. What percentage does their child have to get sickle cell?
Answers
Answer:
1/4 chance.
Explanation:
I used a punnet square to calculate the possibility and it seems to be a one in four chance.
Answer:
The answer to that question is 25%
Explanation:
Reason is because 1/4 = 25%
Why does sound travel faster through a solid object than in the air?
Answers
Answer:
Sound travels more quickly through solids than through liquids and gases because the molecules of a solid are closer together and, therefore, can transmit the vibrations (energy) faster.
Answer: Because molecules in a solid are packed together tightly.
Explanation: The molecules of a solid immediately collide and the compression wave travels rapidly.
You are working with a set of human remains that show two pathologies. You note some spongy bone on the upper side of the eye socket of the individual. You also note several lips or spurs of bone protruding from the vertebra. What two afflictions did the individual likely suffer from
Answers
Answer:
Porotic hyperostosis and an iron deficiency anemia
Explanation:
Iron deficiency anemia is a popular type of anemia caused by the deficiency of the mineral iron in the blood. The body needs iron to produce hemoglobin which helps to distribute oxygen in the body. When there is no iron in the blood, the entire body would be deprived of oxygen.
Porotic hyperostosis is a condition whereby the bones in the skull or cranial vault becomes spongy and swells. The cause of the condition could be the hemolytic or megaloblastic anemia that occurs as a result of excessive production of hemoglobin.
Why do the walls of the stomach secrete hydrochloric acid?
Answers
Answer: sorry I’m to lazy to type
:)))
PLZ HELP WILL GIVE BRAINLIST
Hailey is comparing and contrasting various forms of cellular reproduction, and she focuses her research on meiosis. Meiosis is important for sexual reproduction because it gives sex cells (gametes) what unique feature?
Group of answer choices.
They contain only half the genetic material of the parent.
They are able to exist outside of the organism.
They are smaller than all other cells in the body.
They are able to exist outside of the organism.
Answers
Answer:
A
Explanation:
The unique features with regarding the se-xual reproduction should contained only half the genetic material of the parent.
What is Meiosis?Meiosis refer to the special type of the cell division with respect to the germ cells with respect to the organism that should be se-xually reproduction.
Also, it generated the gametes, like the sperm or egg cells. Also, it includes the 2 rounds of division that leads in four cells with only one copy for every chromosome.
Therefore, the first option is correct.
learn more about Meiosis here: https://brainly.com/question/11135278
Is slipping on a patch of ice an example of friction?
Answers
Answer:
no it is not
Explanation:
hope this helps
Answer: yes bc the ice cream has less friction than the floor
Explanation:
Music > color should be read as: a. music on color c. music to color b. music before color d. music then color Please select the best answer from the choices provided A B C D
Answers
Answer:
C
Explanation:
Meiosis results in?
Answers
The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.
Answer:
It results in the reduction of chromosomes by half and produces four gamete cells. And those four cells are the result and known as the daughter cells.
Explanation:
Which of the traits below are completely influenced by the expression of genes? (Choose all that apply)
Group of answer choices
weight
hair texture
attached or unattached earlobes
eye color
Answers
Answer:
Hair texture, attached/unattached earlobes, eye colors.
Explanation:
Weight is gained through the individual themselves as they grow and develop. There is no determined weight with genes.
Answer:
I hope this helps.
Explanation:
How does this correlate to the severity of these diseases?
Answers
Choose two spheres of Earth which interact during the reproduction of mushrooms. Use complete sentences to explain how they interact during this process.
Answers
Answer:
Mushrooms release special cells called spores. They rely on wind to spread these spores.
Explanation:
The mushrooms are part of the biosphere, so the biosphere help the Mushrooms to release these cells. Wind is part of the atmosphere, so mushrooms also rely on the atmosphere to carry its spores.
What are the important considerations during the classification of nematodes? Describe how nematodes are classified and also different systems of nematode classification?
Answers
Answer:
The important considerations during the classification of nematodes and also different systems of nematode classification is discussed below in details.
Explanation:
Nematodes that generally parasitize humans incorporate ascarids (Ascaris), hookworms, filariasis, pinworms (Enterobius), and whipworms (Trichuris). The species Trichinella spiralis, generally recognized as the 'trichina worm', transpires in pigs, rats, humans, and bears, and is accountable for the disease trichinosis.
How is energy cycled through a cell?
Answers
Answer:The cell needs glucose to have ATP and the cycle is cellular respiration. It turns glucose into energy by forming that ATP.
Explanation:
What produces hormones and lipids
Answers
Answer:
Most lipid hormones are steroid hormones, which are usually ketones or alcohols and are insoluble in water. Steroid hormones include estradiol, testosterone, aldosterone, and cortisol.
Explanation:
Answer:
SER (Smooth Endoplasmic Reticulum) is associated with lipids and hormones (like steroidal hormones)
what effects do mutations have? Check all that apply.
Answers
Answer:
By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition
Answer:
answer a,c,e,f
Explanation:
it can change protein shape
might be neutral
might be harmful
might be beneficial
if you are to establish your own animal and fish raising business,what it would be and why?
Answers
Answer:If you are to establish your own animal and fish raising business,what it would be and why? Get the answers you need, now!
Explanation:
Which of the following best describes why cells must be tiny?
Answers
Answer: Cells must be tiny so the DNA will not overload.
Explanation:
Answer:
cells must be tiny
Explanation:
they have to be tiny because your body is made up of hundreds of cells and they make up your body and in order to have the cells your body needs as you grow they asexual reproduce which makes more and makes you grow which is why they are tiny and when science is special because they need a special tool to see. the cells
How might a mutation in the DNA of the Piedmontese bull lead to muscle hypertrophy
Answers
A tiny seeding grows into a tall tree with a mass of several tons. From where does the tree gain all that mass?
Answers
Answer:
it comes from sunlight
Explanation:
Which of the following are considered part of the musculoskeletal system?
bones
heart
joints
muscles
connective tissue
brain
feet
blood
Answers
Answer:
muscles, bones, joints, connective tissue
Explanation:
Answer:
bones
joints
muscles
connective tissue
Explanation:
The drug Viagra promotes blood vessel dilation by prolonging signaling through nitric oxide (NO). How does Viagra boost NO?
a. It inhibits guanylyl cyclase in smooth muscle cells.
b. It prevents acetylcholine from binding to its receptors.
c. It stimulates guanylyl cyclase in smooth muscle cells.
d. It blocks the enzyme that degrades cyclic GMP.
e. It binds to acetylcholine receptors on endothelial cells.
Answers
Answer:
The correct answer is option d, that is, it prevents the enzyme, which degrades cyclic GMP.
Explanation:
Oral therapy for erectile dysfunction is Viagra, which is the citrate salt of sildenafil, it works by preventing a specific phosphodiesterase type 5 or PDE5, which is the inhibitor of cGMP. During sexual stimulation, nitrous oxide is released in the corpus cavernosum causing the erection of the penis in males. The nitrous oxide then stimulates the enzyme guanylate cyclase that further makes the concentration of cGMP to elevate, this generates smooth muscle relaxation in the corpus cavernosum and permitting blood the inward flow of blood.
Viagra works by increasing the influence of nitric acid by preventing PDE5, which is accountable for the deprivation of cGMP in the corpus cavernosum. At the time of sexual stimulation, the discharging of nitrous oxide takes place, the viagra inhibits PDE5 causing the levels of cGMP to elevate in the corpus cavernosum leading to smooth muscle relaxation and continuous flow of blood to the corpus cavernosum.
Which upper chamber of the heart contains oxygen-rich blood?
a. the right atrium
b. the left atrium
c. the right ventricle
d. the left ventricle
Answers
Answer:
b. la aurícula izquierda
Explanation:...
Answer:
B.the left atrium
Explanation:
The frog population in the Amazon basin varied. Every 500 years, there was a mutational change leading to speciation. In between, the population remained the same with no observable changes. What pattern of macroevolution determined this change?
A. Gradualism
B. Adaptive radiation
C. Punctuated equilibrium
Answers
Answer:
C
Explanation:
Answer:
c
Explanation:
A group of 7 friends are going to a movie. Each ticket costs $9. They also spend $18 on snacks.
Estimate the total amount of money the group spent.
Choose 1 answer:
А
$37
$50
$90
$150
Answers
Answer:
$81
Explanation:
7 times 9 is 63, so they spent 63 dollars on tickets. If 18 dollars are spent on snacks on top of that, then the group of friends spent 81 dollars in total. If you were to estimate the answer before solving it, $90 would be the closest answer of the four listed.
Answer:
The answer is $90
Explanation:
what is the difference between cell structure and cell function?
Answers
Answer:
These cells have a membrane-bound nucleus that houses their DNA and contain extensive internal organelles (“little organs”) that perform specific functions. ... Differences occur in size, shape, and presence and number of various organelles and other structures. Each cell's structure correlates with its specific function.
Explanation:
Answer:
A cell can be defined as the smallest unit of life and an example include muscle cells. An aggregation of cells form tissues.
The major difference between a cell structure and cell function is in their functions and physical properties.
Cell structure: This talks about how the cells look like when viewed. A call contains components such as the nucleus, cytoplasm, cell membrane etc and each has their various functions to ensure the organisms/animals are able to perform various life activities.Cell function: This on the other hand refers to the various functions which a cell is able to perform and this is dependent on the component in question such as the nucleus which controls cell activities and cytoplasm which provides support and helps to house other organelles.
Read more on https://brainly.com/question/19715268
The bicep is what type of muscle?
Cardiac
Skeletal
Smooth
Non-Striated
Answers
not too sure tho
The biceps is a skeletal muscle that contans polynucleated cells that are about 10-12 cm long and have striations.
The process of inducing changes in specific sections of DNA is referred to as?
Answers
Definition: This is the location where two or more bones make contact. This junction allows for
movement and structural support.
CAN SOMEONE PLZZ HELP REPORT CARDS ARE DUE TOMORROW
Answers
Answer:
Joint.
Explanation:
A joint can be defined as the location where two or more bones make contact.
Also, a ligament refers to a short elastic band-like tough fibrous tissue that holds the bones of a joint together so as to keep them in place. This joints are able to move (lengthen and shorten) as a result of the presence of muscles.
Basically, this junction known as joints are typically found in vertebrates and it allows for movement and structural support.
Hence, the ability of the human body to make movements such as sitting down, kneeling, standing up, bending, walking, running etc., is solely dependent on the joints. Thus, without joints all vertebrates would be completely rigid and static.
Why is it logical to see that “parasitic” genomes tend to be much smaller than similar free-living organisms?
Answers
How many miles is the troposphere (in miles)?
5 miles
6 miles
7 miles
8 miles
Answers
Answer:
5 miles
Explanation:
Good day.