two, X and Y
XX is typically female, XY is typically male.
Which approach would be least helpful in determining genetic differences between species?
Answer:
the least helpful would be a straight up guess, the best way would be to to back in the history of that species and study how they lived and survived and reproduced and all that stuff
Explanation:
Comparing physical characteristics between species is not a reliable method for determining genetic differences because many physical traits are influenced by environmental factors and may not necessarily reflect the underlying genetic differences between species.
What is an example of this ?For example, two species may have different fur colors or patterns, but this difference may be due to environmental factors such as exposure to different types of light rather than genetic differences.
In contrast, analyzing DNA sequences can provide a more precise and objective way to identify genetic differences between species. By comparing the DNA sequences of different species, scientists can identify variations in genes and regulatory regions that may be responsible for differences in traits or behaviors between species.
This approach can also reveal the evolutionary relationships between species and provide insights into how genetic variation has driven the diversification of life on Earth.
Therefore, Advances in genomic technologies have made it increasingly feasible to sequence and compare the genomes of diverse species. Comparative genomics has already revealed many insights into the genetic basis of traits such as human disease susceptibility, adaptation to environmental challenges, and the evolution of complex traits such as intelligence and social behavior.
Learn more about genetic differences at :
https://brainly.com/question/20172638
#SPJ3
HELP WILL GIVE BRAINLIEST!!! NO LINKS PLS
Divergent Plate Boundary:
Plates will move away from each other at this boundaryMantle is more exposed as plates move away, and will rise up to the crust/surface.Convergent Plate Boundary:
Plates come together. Crust/plates forced down into the mantleIf you need more details please comment and let me know!
Unspecialized embryonic stem cells are found in?
ESCs are derived from the inner cell mass of an embryo, called blastocyst
List the sequence of events that occur as the avocado seed germinates.
Answer: The sequence of events of avocado seed germination includes:
Water absorption --> enzyme activation --> radicle emerges --> lengthening of the hypocotyl --> growth of epicotyl and plumule development --> shrinking of the cotyledons.
Explanation:
Germination is defined as all the changes that occurs when a seed embryo resumes it's growth and development to become an independent seedling. Seeds usually germinate in two ways:
--> EPIGEAL germination: in this type of germination, the hypocotyl grows rapidly and elongates, carrying the cotyledon above the soil.The AVOCADO seed is a typical example of a dicotyledonous plant.
The sequence of events of avocado seed germination starts by imbibition which is the rapid in take or absorption of water by the seed through osmosis. Hydration of the embryo activates the enzymes in it which converts insoluble stored food materials into soluble forms. The testa splits and the radicle emerges first. It grows downwards as the primary root from which root hairs and branch roots arise( to form a tap root system). Next, the hypocotyl lengthens, pushes its way up through the soil carrying with it the cotyledons and the plumule. The cotyledons turn green on exposure to sunlight and start to photosynthesize. The epicotyl then grows and the plumule develops into a green shoot. By the time the first foliage leaves grow and begin to photosynthesize, the cotyledons shrink and drop off.
What does central dogma refer to?
Answer:
The central dogma of molecular biology desrices the flow of genetic information in cells from DNA to messenger RNA to protien.
Explanation:
Research and find a zoonotic disease that you find interesting. Write a news report that could be used as a script for a TV news show.
Instructions
Include the following in your report:
Explain what a zoonotic disease is.
Describe the disease.
Explain how to protect yourself from becoming infected.
Your report should be 100 to 125 words long.
I need a little help i will mark you branleist
Zoonotic diseases are animal diseases that can be transmitted to humans. Transmission can be by ingestion, inhalation, bites, scratches, contact with contaminated products, and vector-borne. There are over 200 zoonotic diseases that can possibly threaten your health and involve several different causative agents, such as bacteria, parasites, viruses, and others. I am only going to inform you of just a hand full that is caused by bacteria and contaminates cattle. Once the cattle on large commercial farms become infected it can be a challenge to get rid of and contain.
Wash hands before and after animal handling.
1. Do not eat or drink in the animal housing areas.
2. Wear coveralls, farm specific clothing or laboratory coats when handling animals.
3. Avoid handling sick animals or animals with lesions unless gloved.
4. Wear a mask if you are allergic to animal hair or dander or if feed or bedding dust is present.
5. If you are sick, DO NOT enter the agricultural animal facilities. You are more susceptible to other infective agents and you may transfer pathogens to the animals!
6. Routinely wear gloves when cleaning animal area.
7. Note progression of any illness. Report illnesses to your supervisor.
8. Inform physician of your animal related activities.
Explanation:
I hope that this is what you were looking for...
A bird is flying south at 20 mph. Then the bird turns to go west. The bird is still flying at 20 mph. Did the velocity change?
Answer: i was wrong sorry
Explanation: sorry
The soil around a lilac bush was watered with a solution containing
radioactive phosphorus. Several hours later, radiation was detected in it’s
branches. Through which structures did the radioactive phosphorus read
the branches?
A. stomata
B. guard cells
C. xylem vessels
D. phloem vessels
Answer:
I think its D
Explanation:
Define light reaction.
Define dark reaction.
I am in search of perfect answer, otherwise i'll report it.
➜ A chemical reaction which take place only in the presence of light, is called light reaction or light dependent reaction.
• It takes place in grana of chloroplast.
➜ A chemical reaction which can take place even in the absence of light, is called dark reaction or light independent reaction.
• It takes place in stroma of chloroplast.
Show the path of air after entering the nostrils.
Pleas answer it for my assignment..I beg u..pls
Answer:
Answer is below
Explanation:
Pathway of air: nasal cavities > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli.
Hope this helps:)
➜ In humans, air takes the following path after entering the nostrils.
Nostrils.
↓
Nasal passage.
↓
Pharynx.
↓
Larynx.
↓
Trachea.
↓
Bronchus.
↓
Bronchiole.
↓
Alveolus.
Give gene combinations for each of the following dihybrid genotype:
a) TTPP
b) ttpp
c) TtPP
d) TtPp
1. What were the results from Chargaff's experiment? Select all that apply.
Multiple select question.
A)adenine binds with thymine
B)adenine binds with cytosine
C)cytosine binds with thymine
D)cytosine binds with guanine
E)adenine binds with guanine
F}thymine binds with guanine
Answer:
A,D
Explanation:
The results from Chargaff's experiment includes adenine binding with
thymine and cytosine binding with guanine.
Chargaff was a Scientist who performed various experiment using the DNA.
He discovered that DNA varied and had purine and pyrimidine bases.
He also discovered that the amount of cytosine should be equal to the
amount of guanine and that the amount of adenine must be equal to the
number of thymine and that both should be paired together.
Read more on https://brainly.com/question/22613696
In a certain length of DNA, the bases ACCGTA are found. What bases would be found on the opposite side of the DNA molecule?
Answer choices:
A) ACCGTA
B) GAATCG
C) TGGCAT
D) UGGCAU
Answer:
The answer is C
Explanation:
A turns into a T
T urns into a A
C turns into a G
G turns into a C
How can DNA code for all living organisms with only four bases to generate the code?
PLEASE ANSWER QUICKLY
Which characteristic is shared by all mollusks and echinoderms?
live only in salt water
lack a backbone
use tube feet to move
have an open circulatory system
Answer:
have an open circlitory system
Explanation:
Answer:
D) have an open circulatory systemExplanation:
Hope this helps!
What are your body's first line of defense? How does your skin work to protect you?
UHMM I REALLY NEED HELP IM BAD AT Science
Answer:
the answer is A im 99 percent shure
all you need is in the photo please answer fast please helpppppp
Don't answer randomly if you do you lose your points because I am gonna lose points
Help please
In an experiment, 90 newborn flies are divided evenly into three separate
groups and placed in boxes inside an incubator that is maintained at a
constant temperature of 30°C. On a daily basis, the first group is given water
containing 1 mg/mL of sugar; the second is given water containing 2 mg/mL
of sugar; and the third is given water containing 3 mg/mL of sugar. After four
weeks, the average length of the flies in each group is determined.
Which factor is the independent variable in this experiment?
A. Number of flies in a group
B. Average length of flies in a group
C. Concentration of sugar in the water
D. Temperature of the incubator
Answer: Average length of flies in a group is the right answer, I did it.
Most bacteria are surrounded by a rigid protective structure called the _____.
•cell wall
•cell membrane
•flagellum
•protein coat
Answer:
Most bacteria are surrounded by a rigid protective structure called the cell wall.
Guys pls help me!!!!!!!!!!!
Answer:
True
Explanation:
Tissue found in some bones that makes blood cells or called what?
Answer: bone marrow
Explanation: Bone marrow is the soft, spongy tissue that is located in the medullary cavities (centers) of certain large bones. Healthy bone marrow is an essential part of the body, as it contains stem cells that produce blood cells and the cells that make up the immune system.
Answer:
is called bone marrow
Explanation:
Is the spongy tissues inside our bones
What is the phenotype ratio for this cross?
Answer:,,
Explanation:
Answer:
3 long and 1 short
Explanation:
3 of the squares have the dominant allele for long needles (L) therefore all 3 would all have long needles because in order for a cactus plant to have short needles it would have to have only the short allele (l) like the one on the bottom right corner
Which of the following is NOT a benefit of using fracking?
A. It allows use of formerly trapped resources.
B. It uses fresh water which can become be polluted.
C. It has allowed countries like the US to become more energy independent.
D. It has increased the supply of energy resources.
¿Cuáles son los alimentos que contribuyen una fuente rica en vitaminas y minerales ? A) Cereales y tubérculos B) Leguminosas y frutas C) carnes y cereales D) Verduras y frutas
Answer:
todas las opciones son correctas
Explanation:
Las vitaminas y minerales son micronutrientes esenciales que deben ser consumidos a través de la dieta parra llevar a cabo funciones metabólicas y fisiológicas diarias. Es importante destacar que existe una excepción a esta regla: la vitamina D puede ser sintetizada por células de la piel mediante una adecuada exposición a la luz del sol. Todos los alimentos destacados en las opciones mencionadas son ricos en determinados grupos de vitaminas y minerales:
- Cereales: ricos en vitaminas del grupo B y minerales, principalmente fosforo y potasio
- Tubérculos (por ej., la papa y la batata): ricos en vitaminas A y C, y minerales, principalmente potasio, fósforo y magnesio
- Leguminosas: ricos en vitaminas del grupo B y vitamina C, y minerales tales como potasio, hierro y magnesio
- Frutas y Verduras: ricos en vitaminas de todos los grupos y minerales esenciales tales como potasio, hierro, magnesio, fósforo, calcio, zinc, etc.
- Carnes: ricos en vitaminas del grupo B y minerales, principalmente hierro, fósforo, calcio, potasio, magnesio selenio y zinc
how aquatic animals and plants adapt to live in water
Why are ecological forecasting projects important?
bonus;
• What are helping interactions? Provide an example.
• What are harmful interactions? Provide an example.
Answer:
Ecological forecasting projects are important because they can help us determine what can/will happen to our environments in the future.
Helpful interactions would be not polluting.
Harmful interactions would be polluting.
Hope this helps, please let me know if you were looking for a different answer.
describe how ingestion of very salty food may reduce amount of water excreted in urine
Answer:
because salt is really dry so it would decrease the amount of water
Explanation:
Help... I have number one done I just need to awnseres to 2 and 3
I need help i will love you forever I need to get my grade up by the end of today
She/They idc if u don't want to see my pronouns I want u to see them