please answer the question​

Answer:

B. 1/2 and 1/4

Explanation:

Hemophilia is a disease inherited in humans. It is only carried on the X chromosome, hence, it is said to be X-linked. In this question;

X - unaffected X chromosome

x = X chromosome affected by hemophilia,

Y = Y chromosome

Hence, in a cross between a Xx female (carrier) and a XY male (unaffected), the following chromosomes will be present in the gametes produced by each parent:

Xx- X and x gametes

XY- X and Y gametes

Using these gametes in a punnet square (see attached image), offsprings with genotypes: XX, Xx, XY and xY are produced.

XX (1) - unaffected normal female

Xx (1) - unaffected carrier female

XY (1) - unaffected normal male

xY (1) - affected male

Based on the questions;

- 2 out of the possible 4 children have the affected chromosomes i.e. both xY son and Xx daughter have the x chromosome. Hence, the fraction is 1/2

- 1 out of the 4 possible children is affected by hemophilia, which is the xY son. Hence, the fraction is 1/4.

Answer:

1/2 and 1/4

Explanation:

Took the test

Answer:

True

Explanation:

It is true that Mendel always got close to a 9:3:3:1 ratio for phenotypes in the F2 generation of any dihybrid cross. This validates his law of independent assortment of genes.

The 9:3:3:1 is usually gotten from any dihybrid cross of F2 generation. The results given are always 9 offsprings containing dominant traits, 3 offsprings each which possess a dominant and recessive trait and 1 offspring with a recessive trait.

Answer:

phyllotaxy

photosynthesis

chloroplasts

chlorophyll

energy

oxidation

oxygen

reduction

independent

stroma

Explanation:

The arrangement of leaves that provide maximum exposure to sunlight is referred to as leaf phyllotaxy that reduces overlapping and overshadowing of leaves and supports maximum photosynsthesis.

The contains numerous chlorophyll molecules that trap the light energy for the oxidation of water and producing oxygen (O2) atoms required for carbon (IV) oxide reduction in light-independent, which takes place in the stroma of the chloroplast.

Hence, the correct answer in a sequential manner is as follows:

phyllotaxy

photosynthesis

chloroplasts

chlorophyll

energy

oxidation

oxygen

reduction

independent

stroma

Answer:

no

Explanation:

Answer: CFCs

Explanation: The other options aren’t as relevant to air pollution.

Answer:

cfcs

Explanation:

Answer:

A reflex action is an involuntary , quick  response to a stimulus, which minimises any damage to the body from potentially harmful conditions, such as touching something hot.

Explanation:

Answer:

Thymine

Explanation:

Answer:

Parastic

Explanation:

Explanation:

The mode of nutrition in house fly is known as SCRAPING

Answer:

The correct answer is - option B.

Explanation:

The proximal convoluted tubule or PCT is the the part of nephron that lies in between of loop of Henle and bowman's capsule. The PCT is responsible for the most amount reabsorption of sodium, glucose, amino acids, water, potassium and chloride and reabsorbs around 65% to 100% of filtered substance.

Epithelial cells in the PCT reabsorb substances that have nutritional importance by the numerous microvilli on their surface.

Thus, the correct answer is - option B.

Answer:

Joule

Explanation:

Answer:

- the Joule (J)

Explanation: The Si unit of energy is the same as the unit of work. In slightly more fundamental terms, 1 joule is equal to 1 newton metre and, in terms of SI base units.

Answer:

First peak which touches the A line

Answer:

Meat-Boiling, Grilling, frying and roasting

Groundnuts-frying,boiling

Potatoes-Boiling frying and roasting

Answer:

P2O3 y BaO

Explanation:

The oxides of the main group metals are basic in nature. They form alkaline solutions when dissolved in water. Similarly, the oxides of main group non metals form acidic solutions when dissolved in water.

P2O5 is an oxide of a main group nonmetallic element in group 15. We expect this oxide to be acidic and form acids when dissolved in water as expected from the chemistry of the group.

Also, BaO is an oxide of barium, a group two main group metal. Hence we expect this oxide to be basic in nature and form alkaline solutions.

Answer:

changing i think

Explanation:

Answer:

a branch of science concerned with the relationships between living things and their environment or the pattern of relationships between living things and their environment.

Explanation:

Answer:

They are called promoter and regulatory genes.

Explanation:

There are different genes responsible for regulating transcription:

These are the inhibitors, promoters and regulators.

Regulatory genes are in charge of regulating that promoter or inhibitor genes remain intact or do not present mutations.

Promoter genes promote cell replication, hence transcription.

In the case of malignant or benign neoplasms, there must be yes or if the affection of a regulatory gene plus the affection of an inhibitory or promoter gene.

2 ypes of waste liquid and solid

Explanation:

biodegradable waste can be found in municipal soild waste or sometimes called biodegradable municipal waste ,or as green waste ,food waste,paper waste and biodegradable plastic.other biodegradable waste include human waste ,manure,sewage,sewage sludge and slaughterhouse waste .

you can send it for recycling into compost.

you can treat biodegradable waste on an industrial scale by either composting or anaerobic digestion.

composting is more suitable for fibrous materials.

anaerobic digestion is more suitable for wastes and sludgest that degrade easily.

30% of the earth's surface is covered by forests.

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Answer:

the zooxanthellae in a pillar coral's body are alive

Answer:

a. Hypertonic solution

b. Hypotonic solution

Explanation:

There are basically 3 types of solutions in biology,

1) Isotonic-Same concentration of solute and solvent inside  the grape and in the solution.

2)Hypotonic solution-More concentration of solvent in the solution than in the grape.

3)Hypertonic solution-More concentration of solvent in the grape than in the solution.

Now,

a. Tara had kept the grape in a hypertonic solution. The solvent will start draining from the grape to equalize the concentrations of solvent inside and outside. So, the grape shrank due to loss of water.

b. Tara kept it in a hypotonic solution. The solvent will start entering the grape to equalize the concentrations of solvent. So, the grape started swelling.

Answer:

Fossils provide solid evidence that organisms from the past are not the same as those found today; fossils show a progression of evolution. Fossils, along with the comparative anatomy of present-day organisms, constitute the morphological, or anatomical, record. By comparing the anatomies of both modern and extinct species, paleontologists can infer the lineages of those species. This approach is most successful for organisms that had hard body parts, such as shells, bones or teeth. The resulting fossil record tells the story of the past and shows the evolution of form over millions of years.

Explanation:

HOPE IT HELPS.PLEASE MARK IT AS BRAINLIEST

Answer:

fossils are the preserved remains or traces of animals , plants and other organisms from the past fossils range in age from 10 000 to 3.48 billion years old. the observation that certain rock strata led 19th centuary geologist to recorgnise a geological timescale.

Answer:

The correct answer is -  Melted rock called magma rose through holes in Earth's crust and gradually solidified as it cooled.

Explanation:

The Hawaiian Islands are the chain of eight major islands situated in U.S. of Hawaii. These are formed over a hot spot. About 75 million years ago such hotspot took place in the center of the Pacific Plate.

There are hot spot due to the volconic activity and in the moving over the tectonic plate of a subduction zone. Volcanic activity and overriding of plates that cause rising magma by melting the moving down plates whice leads to volcanic arcs formation. The magma that rose gradually cooled down and become solid over the time. It is an example of a large seamount and island chain created by hot-spot volcanism.

Thus, The correct answer is - Melted rock called magma rose through holes in Earth's crust and gradually solidified as it cooled.

Answer:

Mushroom-Kingdom Fungi

Moss-Kingdom Plantae

Earthworm-Kingdom Animalia

Volvox-Kingdom Protista

Bacteria-Kingdom Monera

Explanation:

The classification of the organisms into five kingdoms is as follows:

Classification is distributing the organisms into different groups according to their similar characteristics. The five kingdom classification is the approved form of classification today.

The five kingdoms are Monera, Protista, Fungi, Plantae, and Animalia, and the organisms are distributed in these kingdoms.

Thus, the classification is following:

Learn more about classification, here:

https://brainly.com/question/14489978

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Answer:

Sex hormones or hormones of the reproductive organs are certain cells in the reproductive organs that produce hormones.

The testis produces testosterone,the male sex hormone,and the ovaries produces oestrogen and progesterone, the female sex hormones.

In a sexually mature male,testosterone influences sexual behaviour, and together with FSH,regulates sperm production in the seminiferous tubules of the testes.

Sexually matured females undergo a regular 4-week reproductive or menstrual cycle during which a mature egg is released.This cycle is regulated by oestrogen and progesterone. During pregnancy, progesterone inhibits egg production (ovulation),brings about the development of the placenta and prevents the uterus from contracting....I hope this answers your question... Thank you for the question.

Explanation:

hi !!

here i think all areirrational expect root 36/1296,

1. root 2= root 2= 1.414213562

2. 2/root 6= root 6 /3 = 0.8164965809

3. root 36/1296=1/6=1.66666667

4. - root 6+6= -2 root 3 = -3.464101615

so, they are extended and dont have exact value so all are irrational expect no. 3 because it can be expressed in 1/6 fraction form but others will come on root form.

Hope it helps...

Answer:

[tex]\frac{\sqrt{36} }{1296}[/tex]

Explanation:

[tex]\sf A \ rational \ number \ can \ be \ expressed \ as \ a \ quotient \ of \ two \ whole \ integers.[/tex]

[tex]\sqrt{2} = 1.41421356237...[/tex]

[tex]\frac{2}{\sqrt{6} } = 0.816497...[/tex]

[tex]\frac{\sqrt{36} }{1296} =\frac{6}{1296} =\frac{1}{216}[/tex]

[tex]-\sqrt{6} +6= 3.55051...[/tex]

[tex]\sf The \ rational \ number \ from \ the \ list \ is \ \frac{\sqrt{36} }{1296}[/tex]

Answer:

Explanation: Not later than 14 days.

Beyond Use Date (BUD) is the date after which a compounded sterile preparation may not be stored or transported. This time is calculated from the date of compounding, and it is different from expiration date. This is because the BUDs are assigned with a different approach from those applied to assigning expiration dates to  manufactured drug products. Also, compounded preparations are intended for administration following short-term storage. So, the BUD is the date after which a compounded preparation shall not be  used. A reliable BUD is established to ensure that the preparation  has an accepted quality and purity at least  until the labeled BUD.

BUD is calculated by:

For Nonaqueous Formulation, the BUD is not later than 6 months or the time  remaining until the earliest expiration date of any API (Active pharmaceutical ingredient), whichever is earlier.  

For Water-Containing Oral Formulation, the BUD is not later than 14  days when it is stored at controlled cold temperatures.

For Dermal and Mucosal Liquid, Semisolid Formulations/Water-Containing Topical, the BUD is not later than 30 days.

Answer:

Negative feedback

Explanation:

Negative feedback is produced when a mechanism is amplified through an inverse loop, which tends to reduce the fluctuations in the system. In this case, the negative feedback mechanism represents a homeostatic response of the body where the release of a target hormone (hormone C) decreases in response to the increase of a protein (protein Q) upstream in the signaling pathway. Therefore, in this scenario, it is expected that negative feedback causes a decrease in hormone function.