In a Punnett square for a two-factor cross, is it possible for all of the offspring to be identical?
Explain why or why not.
Answers
In a Punnett square for a two-factor cross, it is not possible for all of the offspring to be identical.
The Punnet square simply refers to a square diagram that's used for the prediction of the genotypes of a breed. The diagram is usually used by biologists in order to determine the probability of the genotype of an offspring.
For example, if there's a dominant and recessive genes represented as B and b. When they're crossed, the offsprings that are gotten will be BB, Bb, Bb, bb.
From the above, it shows that in a Punnett square for a two-factor cross, it is not possible for all of the offspring to be identical.
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Related Questions
Some steps in cell division are shown below:
1. Haploid chromosomes condense
2. Number of chromosomes are reduced to half
3. Chromosomes move to the equatorial plane between the poles
4. Centromeres separate and the sister chromatids are pulled apart to opposite poles by the spindle
Which of the following steps is most likely to occur during meiosis 2 only?
Step 1
Step 2
Step 3
Step 4
Answers
Answer:
Step 3 is most likely to occur during meiosis 2 only.
Explanation:
Answer:
Step 2
Explanation:
Which of the following is part of a seed?
A. stamen
B. pistil
C. seed coat
D. anther
Answers
Answer:
seed coat is a part of a seed.
im feeling nice today so this is for anybody (execpt people who have a lot of points) i dont need it 50 50 for two people .Have a nice day!
Answers
Answer:
Your Awesome
Explanation:
Thanks lol
Answer:
Thanks!
Explanation:
Can u please mark me brainliest? Im desperate.
Have a great day!
#Equestrians
Is NPQ natural or is it something that the scientist made up? I
Answers
Answer:
something a scientist made up
Explanation:
What typically happens to the physiological symptoms of a panic attack when an individual goes through the fear of fear cycle of panic?.
Answers
The symptoms get worse due to positive feedback (i.e., the fear cycles generate more fear). It increases the first stimulus.
What is positive feedback?
Positive feedback is a process where a given outcome stimulates the generation of a result for the first stimulus.
Positive feedback occurs during a process known as a feedback loop capable of increasing the first consequence of a stimulus.
In a process involving positive feedback, the stimulus increases the production of the first disturbance.
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During _____________, molecules like glucose, use a protein channel to enter or leave the cell.
active transport
facilitated transport
ionic pump mechanisms
Answers
i'd say during facilitated diffusion this happens but it's not an option so i'd have to say facilitated transport then, i hope i'm right and i hope this helps!! :)
An ecosystem could probably survive without _____.
Answers
Snowy weather or such cold times would leave most ecosystems better off.
How are ammonia, nitrite, and nitrate levels in an aquarium correlated with one another
Answers
Answer:
Ammonia, nitrite and nitrate at higher levels are toxic to fishes in the aquarium.
Explanation:
Ammonia,nitrates and nitrites are all byproducts gotten from organic wastes which is biodegraded in the aquarium. These byproducts are gotten from fish and plant wastes, uneaten algae , bacteria e.t.c. There are bacterias in the aquarium that help to break down nitrogenous wastes in the aquarium.
Therefore, the waste from fish and plants are breakdown by bacteria into ammonia.
Ammonia at high levels are very toxic to fishes. Then the nitrifying bacteria then help to convert ammonia to nitrite.
Nitrite also at high levels is very toxic to fishes in the aquarium.
Nitrite is also converted to nitrate by nitrifying bacteria.
Nitrate is not very toxic and it is use by algae or plants for growth in the aquarium.
The small intestines of cows are similar in general structure and function to the small intestines of humans. In a cow, damage in the wall of the small intestine reduces the number of villi due to which the cow loses weight and becomes weak. What could be the reason for weight loss and weakness?
Answers
Answer:
Low absorption of nutrients into the bloodstream from digested food.
Explanation:
This question is regarding the small intestine of a cow, which is said to be similar in general structure and function to the small intestines of humans. The small intestine is an organ found in the digestive tract of the cow or human in this case. Its primary function is to absorb the nutrients from the food, that has undergone series of digestion, into the bloodstream.
The small intestine is able to do this with the aid of the finger-looking extensions found on its wall called VILLI. The villi further contains MICROVILLI, which together helps the small intestine absorb nutrients into the blood. Hence, in a case whereby damage in the wall of the small intestine of the cow reduces the number of villi, resulting in weight loss and weakness.
This damage to the intestinal wall will cause a disruption in the absorptive function of the small intestine due to the reduced number of villi. Therefore, THE INABILITY OR LOW ABSORPTION OF NUTRIENTS INTO THE BLOOD THAT THE DAMAGE CAUSES is responsible for the weight loss and weakness in the cow.
The reason for the weight loss and weakness is as a result of decreased
absorption of nutrients from digested food.
The villi is a finger-like structure found in the small intestine which helps in
the absorption of nutrients from digested food into the bloodstream. When
the villi are reduced, the absorption of nutrients are reduced.
This thereby brings about weight loss as a result of nutrient deficiency
caused by low absorption into the bloodstream of the animal(cow)
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why the dates on the geologic time scale are often changed and updated.
Answers
Answer:
Absolute time measurements can be used to calibrate the relative time scale, producing an integrated geologic or "geochronologic" time scale. ... The overall duration and relative length of these large geologic intervals is unlikely to change much, but the precise numbers may "wiggle" a bit as a result of new data.
Explanation:
Hope this helps :)
Which statement is NOT true about the role of glucose?
1.it is produced during photosynthesis
2.it it s food source for the plant
3.it is a waste product of photosynthesis
4.it is converted into ATP
Answers
Answer:
The statement "It is a waste of product of photosynthesis" is incorrect about the role of glucose.
what are the technicial terms for organisms that make their own food , and organisms that obtain food through eating other living thing ?
Answers
producers and consumers im pretty sure its been some time though
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.
Site 1: "Structures of the Nervous System: The Neuron"
What is the function of dendrites? (Site 1)
Answers
Answer:
The dendrites are important for receiving action potential or other stimulation in order for neurons to become activated. Dendrites are electrical signals that receive extensions of the cytoplasm. These signals come in two fundamental forms: inhibitory and excitatory.
Explanation:
just did it on Edge hope this helped :)have a great life bros
The function of dendrites is to receive signals and information from other cells. They have roots like structure.
What are dendrites?Thin structures that emerge from the cell bodies of neurons are called dendrites. A neuron gets information from neighboring cells on its dendrite, or "tree branch." Like tree branches, dendrites branch as they advance toward their tips.
In order for neurons to become engaged, the dendrites are crucial for receiving action potentials or other types of stimulation. Electrical impulses are received via dendrites, which are cytoplasmic extensions. The two basic types of these signals are inhibitory and excitatory.
Therefore, dendrites have the ability to take in signals and data from other cells. They have structures-like roots.
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A student is looking at a cell under a microscope. Which organelle tells the student that she is looking at a plant cell and not an animal cell?
Answers
Answer:
Explanation:
1. Cell wall
2. central vacuole
3. chloroplast
Answer:
Large vacuole
Explanation:
I think if not im sorry!!
9. DNA contains the base______
while RNA contains the base________
instead.
10. Sex-linked traits appear more frequently in________.
11.A Goat has 60 chromosomes in its body cells. What is the haploid number?
Answers
Answer:9: dna contains the base T while RNA contains U
Explanation:
Stars with the greatest mass will eventually become
Answers
Answer:
Stars with the greatest mass will eventually die because the greater the mass of the star, the sooner they'll die. Lower massed stars live longer than the sun, and higher massed stars live shorter than the sun. They will become into a red giant after wards when its fuel is gone. Hope this helped!
Question 7(Multiple Choice Worth 2 points)
(06.02 HC)
Euglena and several other protists that use their cilia or flagella to move around and gather food are classified along with the plant-like protists. What is the most logical conclusion that can be drawn from this grouping?
They are parasitic on plants and use the plant chloroplasts to photosynthesize.
They must also be able to gather energy through photosynthesis.
Their ancestors were plants that lost their multicellular characteristics.
There must be a point in their life cycle when they produce leaves.
Answers
Answer:
They must also be able to gather energy through photosynthesis.
Explanation:
Some algae are considered protists and have photosynthetic pigments in the body, such as certain species of Chlorela, Chlorogonium, Euglena and Navicula are able to grow normally in the dark or in a carbon-deficient environment provided they are supplied with substances. high energy and easily metabolizable chemicals such as fatty acids, acetates, carbohydrates, etc.
For this reason, we can say that Euglena and several other protists, as well as plants, must also be able to collect energy through photosynthesis.
Answer:they must also be able to gather energy through photosynthesis
Explanation:
don’t need an explanation it’s right
photosynthesis lab gizmo
answer key??
Answers
Answer:
you can use Quizlet
Explanation:
Just copy and paste into google and click the one that says something about Quizlet and if thats not the right on just click again
Subject : Earth Science
1.
Identify the type of precipitation that is not one of the main categories.
snow
sleet
drizzle
hail
2.
Which device is used to measure rainfall?
measuring stick
rain gauge
rain meter
rain stick
3.
Which device is used to measure snow?
rain gauge
measuring stick
measuring gauge
rain meter
Answers
1.
Identify the type of precipitation that is not one of the main categories.
snow
sleet
drizzle ✓
hail
It's a a mild fall of drops condensed hence , it's not a main categoryThe four main categories are snow ,rain ,sleet & hail2.
Which device is used to measure rainfall?
measuring stick
rain gauge ✓
rain meter
rain stick
It calculates the precepated rain in a time period per unit area3.
Which device is used to measure snow?
rain gauge
measuring stick ✓
measuring gauge
rain meter
A simple measuring stick can measure the thickness of snowIs the sand, salt, iron mixture in the simulation a heterogeneous or homogeneous mixture?
Answers
Answer:
Sand, salt, and the iron mixture is a heterogeneous mixture.
explain how Global ocean currents circulate Earth's ocean waters
Answers
Answer:
The global conveyor belt's circulation is the result of two simultaneous processes: warm surface currents carrying less dense water away from the Equator toward the poles, and cold deep ocean currents carrying denser water away from the poles toward the Equator.
The bond that joins two amino acids together is known as
Answers
Peptide bonds formation is the linking of amino acids
What are the set of microtubles which move to opposite ends of the cell to aid in cell division called
Answers
Answer:
A centriole
Explanation:
is a small set of microtubules arranged in a specific way. There are nine groups of microtubules. When two centrioles are found next to each other, they are usually at right angles. The centrioles are found in pairs and move towards the poles (opposite ends) of the nucleus when it is time for cell division.
credits to google
I need help
(a lot) I will mark brainlist for best answer
Answers
Answer:
1) In cellular respiration, water and carbon dioxide are products. According to the graph, the products have a lower energy level than their reactant counterparts. - ANSWER IS C
2)
3)
4) Cellular respiration releases carbon dioxide into the atmosphere. - ANSWER IS B
5) Anna is correct that all cellular processes that require energy require ATP, but those that do not require energy occur without ATP. However, the process of glycolysis requires the input of ATP energy.
For each cell of the body to perform its normal cell functions, ATP is the primary energy-driving molecule that must be present in the cell. As a result, ATP is referred to as the "energy currency" of the cell.
However, there may be some processes that do not necessitate the use of energy. Diffusion, osmosis, and other processes that occur along a concentration gradient are examples of such processes.
ATP is required for the processes of glycolysis and the Krebs’s Cycle. - ANSWER IS B
I hope this at least gets you a good start. I am still working on the other two answers, but had something come up that I needed to do. So I will be back with the other two answers in a bit!
:)
Aerobic respiration and photosynthesis are both
Answers
Answer:
Aerobic respiration and photosynthesis are both part of a cyclic process of biochemical reactions. Photosynthesis requires the products of aerobic respiration (carbon dioxide and water), while aerobic respiration requires the products of photosynthesis (glucose and oxygen).
Explanation:
Hope this helps u
Crown me as brainliest:).
Sea otters are a keystone species, they eat sea urchins which feed on sea kelp A large variety of species depend on the kelp forests for food
and shelter. Which species would be impacted by the removal of sea Otters?
Answers
Answer:
All species within that ecosystem would be affected.
Explanation:
Keystone species are species that other organisms largely depend on, if they disappeared, then all organisms within the ecosystems would be affected. For example: Sea urchins would overpopulate and over eat on sea kelp, which may threaten extinction in that area. Sea kelp dying would effect the organisms living/eating sea kelp
How do you calculate wave speed? a. Divide the wave period by the wavelength. b. Divide the wavelength by the wave period. c. Divide the wave height by the wave period. d. Multiply the wavelength by the wave height. Please select the best answer from the choices provided
Answers
Answer:
B. Divide the wavelength by the wave period
What is the average speed of an animal if it runs 180 meter in 10 seconds? * 1 point
Answers
Answer:
In 1 second it runs 18 meters
Explanation:
If it takes 10 seconds to run 180 then divide both sides by 10 to get one second which is 18 meters one second
Hope this helps!
Which of the following describes the dependent variable?
A. The group in which conditions were not changed
B. The variable that is being manipulated by the experimenter
C. The variable that is observed or measured the the experimenter
D. The observation that the experimenter made that started the experiment
Answers
Answer:
C.) The variable that is observed or measured by the experimenter.
Explanation:
The dependent variable is the variable that is being measured or tested in an experiment.
For example:
In a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is being measured.
Have a great rest of your day
#TheWizzer
What are renewable resources?
Answers
Answer:
Renewable resources are resources that naturally grow back the portion that is lost and more solar energy, plant materials are some examples.
Explanation: