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(Both questions 17 and 18)
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To Find :

The recombination frequency between these two mutations.

Solution :

Formula of calculating recombination frequency is :

[tex]R.F = \text{Number of mutations}\times \dfrac{\text{number of k plaques} \times D.F }{\text{Volume used}}\times \dfrac{Volume'}{\text{Number of B plaques} \times D.F' }}[/tex]

Putting all given values in above equation, we get :

[tex]R.F = \dfrac{2\times 400\times 0.2 \times 10^4}{16\times 0.1\times 10^8}\\\\R.F = 0.01[/tex]

Therefore, the recombination frequency between these two mutations is 0.01 or 1 %.

Given:

                     [tex]V'= 0.2[/tex]

The formula:

→ [tex]R.F = No. \ of \ mutations\times \frac{No. \ of \ k \ plaques\times D.F }{Volume}\times \frac{Volume'}{No. \ of \ B \ plaques\times D.F'}[/tex]

By putting the values in the above formula, we get

→         [tex]= \frac{2\times 400\times 0.2\times 10^4}{16\times 0.1\times 10^8}[/tex]

→         [tex]= \frac{160\times 10^4}{1.6\times 10^8}[/tex]

→         [tex]= 0.01[/tex]

Thus the solution above is the right approach.

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Answer:

Plants, like all living things, need food to survive. Plants make their food using a process called photosynthesis, which means “putting together through light.” During photosynthesis, a plant traps energy from sunlight with its leaves. It also takes up water from its roots and carbon dioxide gas from the air.

Explanation:

Interphase - DNA replication occurs

Prophase - Homologous chromosomes pair up forming a tetrad

(The first two might be wrong so I apologize)

Metaphase - Spindle fibers attach to chromosomes

Anaphase - Spindle fibers pull chromosomes toward opposite ends of the cell

Telophase/Cytokinesis - Two new nuclear membranes form. Two new cells are formed

Answer:

The one I chose is very interesting I think you will enjoy it.

Lupus is a multisystem disease in which autoantibody production can lead to inflammation and tissue

damage in any part of the body. The pathogenesis of lupus is thought to be a combination of

predisposing genetic factors and environmental factors such as medication, or infectious agents that

trigger an abnormal immune response. This occurs when Suppressor T cells fail to suppress, in other words there are defects in cell signaling

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Explanation:

Answer:

he is correct

Explanation:

Answer:

C because a flat paper is spread out while a crumbled paper has more gravity but little air resistance

Answer:

C

Explanation:

Low productive rate

Answer:

1. Exoskeleton

2. Jointed appendages

Please find the explanation of the mentioned characteristics below

Explanation:

Arthropods are a group of animals that lack backbones i.e invertebrates but possess jointed legs. Arthropods as their name implies all belong to a large phylum called ARTHROPODA. They include insects, crustaceans etc. Due to their large number among other animal species, their outstanding variety etc, they are considered the MOST SUCCESSFUL animals.

This success of arthropods can be attributed to the characteristics they possess. Two of them are:

- EXOSKELETON: The outside skeleton possessed by members of these phylum supports their body, movement and general protection.

- JOINTED LEGS/APPENDAGES: Arthropods are virtually the only set of organisms that have jointed appendages giving them the adaptational ability to live and thrive in almost every habitat, if not all.

Answer:

B. ice, water, water vapor

THIS IS D just took the test on edge 2021

Answer:

The three stimuli that cause the plants to exhibit tropism are:

1. Touch: This stimulus triggers thigmotropism, which is the turning or bending of the plant and tendrils in response to the touch.

2. Light: This stimulus triggers phototropism. It is how the plant reacts toward the direction of the light source. In this case, the stem may bend in response to the direction of the light.

3. Gravity: This stimulus triggers phototropism gravitropism, which is responsible for the downward growth of roots into the soil.

The three stimuli that cause the plants to exhibit tropism are: Touch, light and gravity.

Tropisms are biological occurrences that signify the expansion or rotation of a living thing, typically a plant, in response to environmental stimuli. Tropisms are frequently connected to plants (although not necessarily restricted to them).

Movement or activity in response to a particular stimulus is more likely to be viewed by an organism where it is capable of purposeful physical movement (motility).

1.  Touch: This stimulus triggers thigmotropism, which is the turning or bending of the plant and tendrils in response to the touch.

2. Light: This stimulus triggers phototropism. It is how the plant reacts toward the direction of the light source. In this case, the stem may bend in response to the direction of the light. 3. Gravity: This stimulus triggers phototropism gravitropism, which is responsible for the downward growth of roots into the soil.

Therefore, The three stimuli that cause the plants to exhibit tropism are: Touch, light and gravity.

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https://goo.gl/search/Weather

☀️ It's 65°F in Los Angeles

Answer:

The organelles that are most likely to be found in Archaea and Bacteria are ribosomes, which they use to synthesize proteins.

Explanation:

Both Archaea and bacteria are unicellular prokaryotic organisms, which have in common lack of nucleus and most of the organelles, however they have ribosomes that allow them to perform protein synthesis.

The differences between Archaea and bacteria have allowed taxonomic classification in different domains.

The other options are not correct because:

Answer:

Both use ribosomes to synthesize protien.

Hope this helps:)

Answer:

d. wave shock

Explanation:

An adaptation can be defined as a phenotypic trait that makes an organism and/or species better suited to its environment, thereby this organism/species will have more chances to survive and reproduce in such conditions. Rock-dwelling aquatic animals have different ecological, morphological and behavioral adaptations to survive in this type of environment. In this regard, it is well-known that these organisms show dorsally flattened bodies, since it is one fundamental morphological adaptation which helps them to dissipate the force of the waves.

Answer:

troposphere

Explanation

The troposphere is the lowest layer of the atmosphere. This is the layer where we live and where weather happens. Temperature in this layer generally decreases with height. The boundary between the stratosphere and the troposphere is called the tropopause.

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Answer:

TAGCAAC CTGACTCAAT

Explanation:

a = t

g = c

I hope this helped and if it did I would appreciate it if you marked me Brainliest Thank you and have a nice day!

Answer:

TAGCAAC CTGACTGA(there is no I) AT

Answer:

wildfire control

Explanation:

Cattle grazing has been used as an effective wild fire control.  On a yearly basis, grazing can reduce the amount and alter the continuity of fine fuels, potentially changing wildfire fire spread and intensity (Stand et al., 2018).

Historically, however, grazing pressure was one of greatest tools for reducing fine fuels that carry wildfires (Miller et al., 1994).

Livestock are very important in reducing the risk of wildfire because they remove the fine fuels; this removal of fine fuels by livestock grazing results in less occurrences of fire hazards.

Answer:

the correct answer is "erosion control"

Explanation:

The correct answer is erosion control. A high animal load on grasslands experiencing drought can lead to serious erosion problems. This situation can be exacerbated if winds remove topsoil; combined with overgrazing and drought, any new moisture could further the erosion of the soil.

Answer:

Uracil

Explanation:

Adenine and thymine form base pairs that are held together by two bonds in DNA. BUT in RNA thymine is replaced with Uracil

Answer:

[tex]H_{2}O[/tex]

Explanation:

Answer:

b. amount of energy available as fuel for the body

Answer: B

amount of energy available as fuel for the food

Explanation:

EDGE 2021

Answer:

The answer is B because you need to have both of the distances the same

Explanation:

Answer:

B

Explanation:

Answer: all the arrows align to point left

Explanation:

Answer:

Ficus religiosa, Ocimum sanctum, Elaeocarpus sphaericus, Desmostachya bipinnata, Garden angelica, Luculia gratissima, Meconopsis villosa, Persicaria affinis, Hardwood, bamboo, palm, and sal trees.

Explanation:

Ficus religiosa, Ocimum sanctum, Elaeocarpus sphaericus, and Desmostachya bipinnata are the medicinal plants that are grown in Nepal which is used in different medicines. Garden angelica, Luculia gratissima, Meconopsis villosa, and Persicaria affinis etc are the important plants which are on large area. Hardwood, palm, bamboo, and sal trees are grown on the Terai region.

The chromosome number produced in daughter cells as a result of mitosis is the 2n that is in option B, as in this process, the parent cell and the daughter cell contain the same genetic content.

There are different sets of chromosomes in different species such as wheat's genetic contents differ from those of humans because humans have two sets (2n) of chromosomes, whereas some plants have tetraploid sets of chromosomes. The number of chromosomes remains constant after cell division in mitosis, and the cell gets the exact same copy in mitosis, which is 2n in the case of the human, as humans have a 2n set.

Hence, the chromosome number produced in daughter cells as a result of mitosis is the 2n that is in option B, as in this process, the parent cell and the daughter cell contain the same genetic content.

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Answer:

The correct answer is - 3/32.

Explanation:

We know that freckles F is dominant over no freckles f, similarly, Widow's peak W is dominant over straight hairline w and attached earlobes are dominant over free earlobes.

So, the combination of alleles for each phenotype would be:

No freckles = ff , Freckles = FF, Ff

Free earlobes = ee , Attached earlobes = EE, Ee

Straight hairline = ww , Widow's peak = WW, Ww

In the question, it is given that the first child has no-freckles, straight hairline, and detached earlobes that would be - ffwwee genotype and as it is given that all alleles are in recessive which means both parents must have recessive alleles.

So, the correct genotype of the man will be FfWwEe and the woman will be FfwwEe.

(man = freckles, widow's peak, and attached earlobes (F_W_E_) and woman = freckles, straight hairline, and attached earlobes (F_w_E_))

then cross between: FfWwEe × FfwwEe

The probability of the freckles and no freckles would be-

Ff × Ff = 3/4 freckles, 1/4 no freckles

 The probability of the widows and straight hairline would be-

Ww × ww = 1/2 widows peak, 1/2 straight hairline

 The probability of the free earlobes and attached earlobes would be-

Ee × Ee = 3/4 attached, 1/4 free earlobes

Combined possibility of all three phenotypes: no freckles, straight, attached would be = 1/4 × 1/2 × 3/4 = 3/32

Thus, the correct answer is - 3/32.

Answer:

Innate or natural immunity

Explanation:

Innate immunity is a defense system that we are born with and that protects us against antigens. It is the sum of all defense mechanisms that occur naturally to protect an individual from infectious diseases. They are physiological mechanisms that  are present throughout the entire animal kingdom  and it is an inherent quality of each species. They are not specific to a given pathogen, nor do they generate memory

On the left side there are 12 hydrogen atoms there needs to be the same number on the right. The coefficient for hydrogen in water is 2.

2*x=12

x=6

The missing coefficient for water is O6 in cellular respiration. Thus option A is correct.

Cellular respiration is up two types such as aerobic and anaerobic.

Aerobic Cellular Respiration is the process by which glucose is and oxygen are used to synthesize CO2, H2O and 36 ATP.  

It occurs in the cytoplasm and mitochondria of the cell.

It has four steps such as Glycolysis occurs in the cytoplasm where  breakdown of glucose occur and make 2 ATP.

The Intermediate Step take place in  mitchondria where 3 carbon pyruvic acid molecules are converted to 2 carbon molecules.

Third step is the Kreb's Cycle occurs in the mitochondria where  2 ATP and Hydrogen ions are collected.

Finally, the Electron Transport Chain occurs in the cristae of the mitochondria make approximately 28-32 ATP.

Thus option A is correct.

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Answer:

mutations affecting proteins that normally regulate the cell cycle.

Explanation:

The function of the cell cycle is the duplication of DNA molecules in  chromosomes and precisely separated by copying into two genetically identical daughter cells.

A tumor is an abnormal mass of tissue that results from the uncontrolled growth of cells.

all the thymine pairs with adenine, therefore there is the same number of adenine and thymine bases and the same percentage

so we have 28%thymine and 28% adenine

100-28-28=44% left

this 44% is guanine and cytosine. All of the guanine pairs with cytosine and all of the cytosine pairs with guanine so we have 44/2=22% cytosine and guanine

composition:

28%adenine

28%thymine

22%guanine

22%cytosine

Answer:

when a cell divides

many other cell is formed

for example if one cell divides two cells will be formed.