Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered pea plant having smooth edges. If the purple-flowered plant is heterozygous for both traits, the expected ratio in the offspring is 1 purple-serrated:1 purple-smooth:1 white-serrated:1 white-smooth. Instead, you see 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth. What is the explanation of this ratio

Answers

Answer 1

Answer:

genes for flower color and edge shape are linked. They do not assort independently.

Explanation:

Available data:

test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.serrated leaves → dominant trait smooth edges → recessive traitpurple color → dominant traitwhite color → recessive traitF1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.

There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.

To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent

 


Related Questions

LOS ALIMENTOS Q EVITAN Q NOS ENFERMEMOS, CONTIENEN: A) LECHE B) ACEITE C) CARBOHIDRATOS D) GLÚCIDOS E) NARANJA

Answers

Respuesta:

La respuesta correcta es: E) naranja.

Explicación:

La vitamina C está presente en los cítricos, como la naranja, el limón y el pomelo. La naranja es una fruta muy rica en vitamina C, de hecho, basta con una al día para cumplir con los requerimientos diarios de esta importantísima vitamina.

Si bien el consumo de vitamina C no cura enfermedades, se probó que tiene un papel fundamental a la hora de reforzar nuestro sistema inmunitario, que es aquel que nos protege de los diferentes microorganismos que nos pueden enfermar.

Además de su rol importante en fortalecer nuestras defensas inmunitarias, el consumo diario de cítricos contribuye a prevenir el cáncer de colon y a regenerar los cartílagos.

The___ cycle is not a nutrient cycle

Answers

Answer:

use

Explanation:

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Predict: Some pathogens are spread directly from one person to another. This can happen when people come into direct contact or share items, such as drinking glasses. What do you think might affect how quickly a pathogen is spread from person to person?

Answers

I think the reservoir ( a human,animal or non living such as soil where the infectious agent normally lives)

secondly the mode of transmission,there are some modes of transmission that allow the pathogen to enter quickly and some that make the process slow.

and also crowding and the presence of co-infections.

i hope this helps

Which autoimmune disease results in the destruction of beta cells in the
pancreas?
type 1 diabetes

pernicious anemia

celiac disease

rheumatoid arthritis

Answers

Type 1 Diabetes would he the correct answer.

H20fall, how do I find out how much salt is in my pool?

Answers

A very peculiar question, kind sir

I supposed one can start by allowing his pool water to evaporate in the blazing summer heat in order to separate the solute (salt) from the solvent (water). After the separation, the obtained mass of salt can be measured on a scale in order to determine the concentration of salt that is present within thy swimming pool. This technique is the most classic of all, and is also the most expedient way to extract salt from water.

Which of these statements expresses a scientific theory?
A. All the tissues that make up animals consist of cells.
B. The larger of two cells probably contains a nucleus.
C. Cells are the basic units of life.
ОО
D. A material that consists of cells came from a living organism.

Answers

Answer:

C

Explanation:

The cells make up a living organism, that is, it is the basic functional unit of the living organism.

use numbers to arrange the events of a demographic transition in order in which they occur

is this correct?​

Answers

the order is 1,4,2 then 3.

(DTM) is defined by a country's death rate dropping quickly while its birth rate staying high. Because of this, a nation in Stage 2 will show an increase in its general population—not because the birth rate is rising, but because births outnumber deaths.

What are the different events of a demographic transition?

The demographic transition model was initially proposed in 1929 by demographer Warren Thompson. The four stages of the paradigm are pre-industrial, urbanizing and industrializing, mature and post-industrial.

Stage 1: Slow population growth is caused by high birth and mortality rates. Stage 2: While the birth rate stays high and the death rate declines, population growth accelerates. Stage 3: Population growth slows as the birth rate starts to decline.

Therefore,  1,4,2 and 3. It is correct events of a demographic transition in the order in which they occur.

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How fast does E. coli manifest symptoms A. 3 mins B. 3 hours C. 3 days D. 3 weeks

Answers

Answer:

C. 3 days

Explanation:

Answer:

c

Explanation:

2-5 days after exposure is when symptoms show

taken from the minnesota department of health

High-latitude ocean water tends to support large planktonic communities because ________. of higher dissolved carbon dioxide there are fewer predators that feed on plankton there is abundant light of the longer summer day length of higher dissolved oxygen and nutrient concentrations

Answers

Answer: They tend to support large planktonic

communities because (of higher dissolved oxygen and nutrient concentrations).

Explanation:

Planktonic communities are made up of basic organisms that forms the oceanic food web. They are broadly divided into Phytoplankton (these are the producers), Zooplankton (these are the consumers) and Bacterioplankton (these are the recyclers).

High-latitude ocean water is mostly affected by the quantity of oxygen and nutrients it contains. Large planktonic communities thrives in these aquatic environment because is contains higher amount of dissolved oxygen and nutrient concentrations which forms part of their basic needs for survival. This is so because changes in ocean water can impact all levels of the food web. Increase or decrease in ocean temperature can modify the plankton diversity and distribution directly by altering it's metabolic rates and growth.

Therefore due to the geographic location of high latitude ocean, higher dissolved oxygen and nutrient concentrations favour the survival of a larger planktonic communities than other ocean parts.

Antidiuretic hormone (ADH) is produced by the pituitary gland when the brain detects lower than optimum levels of water in the body. In the kidneys, ADH promotes the uptake of water, creating more concentrated urine. ADH travels from the pituitary gland to the kidney through the ________ system.

Answers

Answer:

circulatory system

Explanation:

ADH travels in the bloodstream to the kidneys

Name the 5 systems of the human body.

Answers

Answer:

Skeletal System

Muscular System

Circulatory System

Endocrine System

Digestive System

are systems of the Human Body

Explanation:

Answer:

Digestive system

Circulatory system

Respiratory system

Nervous system

Skeletal system

do fertilised eggs divide to form a foetus

Answers

For the first 12 hours after conception, the fertilized egg remains a single cell. ... During the first 8 or 9 days after conception, the cells that will eventually form the embryo continue to divide
Your welcomeee❤️⭐️

Which of these following correctly describes a way in which earth’s atmosphere interacts with the hydrosphere?

Answers

Answer:

water

Explanation:

An area that used to be wet and rainy has now become a dry desert over time.

Which plant adaptations would be most favorable in the new environment?
Select one:

Large, widespread root systems.


Weak, thin stems.


Broad, flat leaves.


Big, colorful flowers.

Answers

Answer:

c

Explanation:

edmentum

predict what happen to the human and the plants if the transport system are affected​

Answers

I think we'll be scared and panicked and some people will die of overthinking

pls answer this question i think easy

Answers

Answer:c

Explanation:it must be c if im wrong then sue me!

Answer:

B. Food is broken into simpler molecules.

Explanation:

these small molecules are; proteins, amino acids, glucose, e.t.c

what is cell division?

Answers

Answer:

cell division is the process by which a living cell proliferates from one cell to two cells.

I hope this helps

Answer:

Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle

Explanation:

Propose advantages and disadvantages of nuclear energy as an energy source.

Answers

Answer:

Advantages:

Produces no polluting gases.

Does not contribute to global warming.

Very low fuel costs.

Low fuel quantity reduces mining and transportation effects on environment.

High technology research required benefits other industries.

Disadvantages:

Waste is radioactive and safe disposal is very difficult and expensive.

Local thermal pollution from wastewater affects marine life.

Public perception of nuclear power is negative.

Costs of building and safely decommissioning are very high.

Cannot react quickly to changes in electricity demand.

Fill in the genotypes for each individual in the pedigree below. Treat “H” as the dominant allele and “h” as the recessive allele. *Hint* start by answering these questions: is the trait likely to be X-linked? Is the shaded dominant or recessive?
List your answers in numerical order. (7 points)

Answers

Answer:

B

Explanation:

edge2021

what type of transport takes place when a protien allows an ion to enter a cell, but no additional energy is needed to make this happen?

Answers

Answer:

The answer is facilitated diffusion. It requires no energy because the ions are traveling down the concentration gradient. Facilitated diffusion is important for the regulation of ions in a cell. It also enables ions to pass across the hydrophobic layer of the cell membrane composed of phospholipids.

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. Which is the best explanation for what has occurred?
a. The runner's muscles have accumulated lactic acid.
b. The runner’s body has failed to perform cellular respiration.
c. The runner’s cells are relying completely on aerobic respiration.
d. The runner’s muscles have accumulated carbon dioxide.

Answers

Answer:

The correct answer is A!

Hope it helps! Thank You! Please mark me Brainliest!

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. The runner's muscles have accumulated lactic acid, this is best explanation.

what is the function of lactic acid ?

Lactic acid is the  component for the proper working of the body as It increases in concentration during exercise but does not cause muscle soreness.

Lactic acid is integral acid for different bodily function and is not solely a byproduct of exercise, has three main uses in the body:

It mainly involve in energy production mitochondria, act as a precursor for producing glucose and  a signaling molecule

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Why ulva is not placed in kingdom plantae

Answers

Answer:

Because Ulva is an algae. Algae belongs to kingdom Protista.

Explanation:

Ulva is a Macroalgae because it's not microscopic.

Macroalgae is not considered as a plant due to their structure. Macroalgae do not have specialized organs and tissues, and they are not vascularized. They also do not have the capacity to form a structure with flowers, leaves, roots or a stem.  

How do the outer layers of cells on the underside of a leaf work to gather carbon dioxide?

Answers

The only way for gases to diffuse in and out of the leaf is through small openings on the bottom of the leaf, the stomata.

The outer layers of cells on the underside of a leaf work to gather carbon dioxide by the utilization of stomata.

What are Stomata?

Stomata may be defined as the presence of tiny pores in the epidermis of the leaf or stem of the plant. The fundamental function of this structure is to regulate the amount of gas exchange.

A massive amount of gaseous exchange takes place in the leaves through these pores for the purpose of photosynthesis.

The opening and closing of these stomata are regulated by the guard cells. In order to prevent water loss through such pores, plants are required to close such pores during mid-day.

Therefore, the outer layers of cells on the underside of a leaf work to gather carbon dioxide by the utilization of stomata.

To learn more about Stomata, refer to the link:

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Convert 90 centuries to minutes using the method of dimensional analysis.

Answers

[tex]\huge\text{Hey there!}[/tex]

“[tex]\large\text{Convert 400 mm to m}[/tex]”

[tex]\large\text{Just simply divide 400 by 1,000 and you will have your result.}[/tex]

[tex]\mathsf{\dfrac{400}{1,000}}[/tex]

[tex]\mathsf{= \dfrac{400\div200}{1,000\div200}}[/tex]

[tex]\mathsf{400\div 200 = \bf 2}[/tex]

[tex]\mathsf{1,000 \div 200 = \bf 5}[/tex]

[tex]\mathsf{= \bf \dfrac{2}{5}}\rightarrow\mathsf{\bf 0.4}[/tex]

[tex]\boxed{\huge\textsf{Therefore, your ANSWER is: \boxed{\bf \dfrac{2}{5} \ or \ 0.4}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Explain the process of finding the volume of irregular solid in laboratory with diagram​

Answers

Answer:

If the object has an irregular shape , the volume can be measured using a displacement can . The displacement can is filled with water above a narrow spout and allowed to drain until the water is level with the spout. As the irregular object is lowered into the displacement can, the water level rises.

Explanation:

A small GTP-binding protein called ______________ assembles as a ring around the neck of each deeply invaginated coated pit, pinch off the vesicle. After the budding is complete, the coat proteins are removed, and the naked vesicle can fuse with its target membrane.

Answers

Answer:

A small GTP-binding protein called dynamin assembles as a ring around the neck of each deeply invaginated coated pit, pinch off the vesicle. After the budding is complete, the coat proteins are removed, and the naked vesicle can fuse with its target membrane.

Explanation:

Dynamin - may be a GTPase that takes part in an important role in clathrin-dependent endocytosis and other vesicular trafficking processes by acting like a couple of molecular scissors for newly setup vesicles originating from the cell wall.

An actin-binding protein called cofilin binds preferentially to ADP-containing actin filaments rather than ATP-containing actin filaments. Based on this preference, which is true? Question 7 options: Cofilin binds to the plus ends of treadmilling actin filaments. Cofilin competes with profilin for binding to actin. Cofilin binds to older actin filaments. Cofilin binds to the plus ends of actin filaments.

Answers

Answer:

Cofilin binds to older actin filaments

Explanation:

Microfilaments (also called actin filaments) are a class of protein filament common to all eukaryotic cells, which consist of two strands of subunits of the protein actin. Microfilaments form part of the cell's cytoskeleton and interact with the protein myosin in order to allow the movement of the cell. Within the cell, actin may show two different forms: monomeric G-actin and polymeric F-actin filaments. Microfilaments provide shape to the cell because these filaments can depolymerize (disassemble) and polymerize (assembly) quickly, thereby allowing the cell to change its shape. During the polymerization process, the ATP that is bound to G-actin is hydrolyzed to ADP, which is bound to F-actin. ATP-actin subunits are present at the barbed ends of the filaments, and cleavage of the ATP molecules produces highly stable filaments bound to ADP. In consequence, it is expected that cofilin binds preferentially to highly stable (older) filaments ADP-actin filaments instead of ATP-actin filaments.

A class was performing an experiment to discover the pH values of some common household substances. The results of three groups are shown in the table below.

Substance
Group 1 pH
Group 2 pH
Group 3 pH
Lemon juice
2.2
2.2
2.1
Vinegar
2.8
2.8
8.2
Baking soda
8.4
8.5
8.4
Milk of magnesia
10.2
10.3
10.2

Which statement best describes evidence that Group 3’s data are less valid than the data for the other two groups?
a. Group 3’s pH value for lemon juice is lower than the values of the other two groups.
b. Group 3’s pH value for vinegar is much higher than the values of the other two groups.
c. Group 3’s pH value for baking soda does not exactly match the values of the other two groups.
d. Group 3’s pH value for milk of magnesia is different from the value obtained by Group 2.

Answers

Answer:

b. Group 3’s pH value for vinegar is much higher than the values of the other two groups.

hope it helps :)

mark brainliest!!!

Answer:

B

Explanation:

READING TOOL Sequence of Events List in order the parts of a typical experiment that uses
scientific methodology. Use the headings in your text as a guide.

Answers

Answer:

2. Background research

3.Create a hypothesis

4.Experiment to test the hypothesis

5.Analyse the data from the experiemnt

Explanation:

2. Learn about the topic and research on what you need for the experiment.

3.Form a hypothesis in which you want to be tested.

4. Do an experiment in which it tests your hypothesis.

5. Analyst the data from the experiment and draw conclusions and decide whether it tests your theory.

Which of the following terms is the life
cycle of a living cell?
A. g1
B. cell cycle
C. interphase
D. mitosis

Answers

Answer:

cell cycle is the term of the life cycle of a living cell

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