Answer:
The correct answer would be - 50% chances of color-blind sons.
Explanation:
Color blindness is a sex-linked genetic disorder that is found mostly in males. It is an X-linked recessive trait which means it will be masked in the presence of the normal X chromosome and in absence of the dominant allele caused this disorder.
Carrier women mean there is a heterozygous condition for this trait and she can pass it the next generation and color blind man means there is one recessive gene X chromosome and one Y chromosome:
Cros between XXc and XcY
gametes: X, Xc and Xc Y
X Xc
Xc XXc XcXc
Y XY XcY
Thus, here one out of two males is colorblind therefore, the probability would be 50%
How many species of horsetails are there?
10
40
20
30
25
Answer:
Here is your ans
Explanation:
15 species of horsetails are there
Tq
Explain how the lungs are adapted for diffusion of gases
Answer:
well u know how we breath air in its the same as gas so your lungs are used to narcotics like smoking and vaping and stuff
Explanation:
Answer: Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation: The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. they give the lungs a really big surface area. they have moist, thin walls (just one cell thick) they have a lot of tiny blood vessels called capillaries.
Why it's important for Environmental Scientists to have a background in many different fields of study?
Answer:
Environmental science involves different fields of study. ... Environmental scientists and specialists use their knowledge of the natural sciences to protect the environment and human health. They must have a solid background in economics, sociology, and political science.
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please help me !!!!!
Answer:
C
Explanation:
A. is incorrect because the cell displayed is an animal cell not a plant cell, so it cannot photosynthesize. The organelle shown is actually the ER.
B. is incorrect because the structure labelled is the nucleus, not a vacuole. Vacuoles store substances like waste, not DNA.
C. Is correct because the pickle-like organelle is the Mitochondria, also known as the powerhouse of the cell due to cellular respiration taking place there.
D. Is incorrect because the cellular membrane of the animal cell is not rigid like the cell wall of the plant cell, instead it is more semi-permeable.
Hope I could help! :)
Homologous is used to
describe alleles that match
true or false
Answer:
true
Explanation:
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Enzymes are catalysts because they lower the ___ of a chemical reaction.
O substrate
O induced fit
O temperature
O activation energy
Answer:
Activation energy
Explanation:
a ???? has definite shape and volume.
-plasma
-solid
-liquid
-gas
Answer: Solid
Explanation: The rest of the options don't have a definite shape nor volume.
Answer:
solids
Explanation:
liquids have a definite volume but bot the shape and gases have neither
PLEASE HELP .!!! ILL GIVE BRAINLIEST.. *EXRTA POINTS* .. DONT SKIP :(( !
ILL GIVE 40 POINTS .
Answer:
C
Explanation:
If an organelle is selectively
permeable what can we
infer about its function?
A. The organelle allows molecules to
pass through easily.
B. The organelle doesn't allow any
molecules to pass through.
C. The organelle. allows some
molecules to pass through.
D. The organelle allows large
molecules to pass through easily.
the correct answer there is C.
What are the target cells for the human Growth Hormone?
Answer:
Once released into the circulation, GH binds and activates the cell-surface GHR, as well as the related prolactin receptor in target tissues such as liver, muscle, bone, and adipose tissue
Explanation:
Direct effects are the result of growth hormone binding its receptor on target cells. Fat cells (adipocytes), for example, have growth hormone receptors, and growth hormone stimulates them to break down triglyceride and supresses their ability to take up and accumulate circulating lipids.
Answer:liver, muscle, bone, and adipose tissue I think
Explanation:
50 points please help, will give brainliest
Fill in the blanks in the following paragraph:
The lac operon genes are a series of 3 genes used to create enzymes to digest the sugar _________. When lactose is NOT present a ___________ protein is attached to the promotor site, preventing ______________ from binding to the promotor site, and transcribing the DNA. This protein is also needs _____________ factors, which are a group of proteins which regulate transcription of genes. When lactose IS present, the ________________ protein falls off and __________________ binds to the promotor, initiating transcription.
Answer:
lactose, repressor, RNA polymerase (or mRNA might fit here), transcription, repressor, RNA polymerase
Explanation:
Hope this will help.
In which era did human history begin?
A
Cenozoic
B
Paleozoic
С
Cambrian
D
Precambrian
E
Mesozoic
Answer:
Prehistoric
Explanation:
The Prehistoric Period—or when there was human life before records documented human activity—roughly dates from 2.5 million years ago to 1,200 B.C. It is generally categorized in three archaeological periods: the Stone Age, Bronze Age and Iron Age.
Many rain forest plants are prone to developing fungal infections on their leaves. Fungi can grow rapidly in moist environments, and a serious infection can kill plants. One rain forest plant species has a genetic variation that affects its leaf structure. The traits and the descriptions of the plant’s leaves are listed in the chart.
Description
Trait A: medium-tip leaves Leaves are narrower toward the tips, but don't come to a full point. Most of the water drains from the leaves.
Trait B: drip-tip leaves Leaves come to a sharp point, leading to thorough water drainage from the leaves.
Trait C: wide-tip leaves Water runs onto the leaves and tends to pool in pockets at the tips.
During natural selection, organisms with harmful traits are less likely to successfully reproduce than organisms with beneficial traits. Neutral traits don’t improve or hurt an organism’s chances for survival. So, they tend to persist in populations when environmental conditions are stable. If the environment changes, neutral traits could become harmful or beneficial depending on the situation.
In year 1, a population of rain forest plants has the following distribution: 50% have medium-tip leaves, 25% have wide-tip leaves, and 25% have drip-tip leaves. You will simulate three years of this population: year 1, year 5, and year 10. How will the trait distribution most likely change over this time?
Year 1: 50% medium-tip leaves / 25% wide-tip leaves / 25% drip-tip leaves
Year 5: 40% medium-tip leaves /40% wide-tip leaves / 20% drip-tip leaves
Year 10: 30% medium-tip leaves /55% wide-tip leaves / 15% drip-tip leaves
I suppose medium-tip leaves become much less over the years is due to the fact withinside the description it says "Most of the water drains from the leaves." And as we recognize fungus likes cool and humid weather. Let us suppose that this plant is large and lives in a completely humid forest, and due to the fact the leaves can not keep water, a maximum of the water might pass at the floor subsequent to it. As we recognize vegetation that might be tall might have an extended shadow, and a fungus can develop below the plant due to the water maintains leaking thru the leaves, the humid temperature, and the shadow of the plant.
Next, I suppose that the wide-tip leaves will maximum probably be capable of living on higher is due to the fact whilst it rains maximum of the water will visit the middle or stem of the plant. (Like withinside the aloe vera plant there may be a bit socket withinside the center of the plant for water to move whilst it rains.) This approach that there might not be as lots water dripping out into the soil. Therefore this means that the soil won't be watery sufficient for a fungus to develop.
Finally, I suppose the drip-tip leaves might be 2nd for the maximum probable capability of life on is due to the fact despite the fact that the rain will usually pass into the soil, however, a few will nonetheless pass into the plant. I'm now no longer pronouncing that the medium-tip depart might not however I suppose that the drip-tip depart might capture extra rain than the medium-tip depart.
What are fungal infections of plants?
It generally causes stress. it is caused by soil, seed, weeds are spread by wind and water.
Hence it concludes that rainforest plants are prone to developing fungal infections on their leaves.
To know more about rain forest plants refer to the link :
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Predict the results if promoters were not part of the transcription process. Please explain in detail!
Answer:
In genetics, a promoter is a protein-binding DNA sequence that initiates the transcription of a single RNA from the DNA downstream. This RNA can encode proteins, or it can have mobile functions, such as tRNA, mRNA, or rRNA. The promoter is near the starting site of gene transcription, upstream of the DNA (towards the 5 'region of the sense strands). The promoters can consist of about 100–1000 pairs
Explanation:
#semogamembantu
Write a sentence or draw a diagram to relate these words: cell, tissue, and organ.
Answer:
Here
Explanation:
1.) What is the source of oxygen produced in photosynthesis?
Please help quick will give brainiest
HELP ME WITH THIS 2 PLZ
Identify the different types of RNA and sections of RNA.
all answers will be used
messenger RNA
ribosomal RNA
transfer RNA
introns
exons
double-stranded RNA
codons
anticodons
Carries copies of the instructions for assembling proteins:
Makes up the subunits of ribosomes.
Carries amino acids and matches them to the coded message for assembling proteins:
Sections of an mRNA molecule that are removed
Sections of an mRNA molecule that are not removed, and are joined together to form the completed molecule:
Answer:
Carries copies of the instructions for assembling proteins: messenger RNA
Makes up the subunits of ribosomes: ribosomal RNA
Carries amino acids and matches them to the coded message for assembling proteins: transfer RNA
sections of an mRNA molecule that are removed: introns
Sections of an mRNA molecule that are not removed, and are joined together to form the completed molecule: exons
The different types of RNA and sections of RNA are :
Carries copies of the instructions for assembling proteins: messenger RNAMakes up the subunits of ribosomes: ribosomal RNACarries amino acids and matches them to the coded message for assembling proteins: transfer RNAsections of an mRNA molecule that are removed: intronsSections of an mRNA molecule that are not removed, and are joined together to form the completed molecule: exonsRibonucleic acid (RNA)Ribonucleic acid (RNA) is a molecule comparable to DNA.
Not at all like DNA, RNA is single-stranded.
An RNA strand features a spine made of substituting sugar (ribose) and phosphate bunches.
Each sugar is one of four bases- adenine (A), uracil (U), cytosine (C), or guanine (G).
Learn more about "RNA":
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Rice growing has involved the destruction of forests. Describe the long-term effects of deforestation on the environment.
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.
Loss of Habitat. One of the most dangerous and unsettling effects of deforestation is the loss of animal and plant species due to their loss of habitat.
-Increased Greenhouse Gases.
-Water in the Atmosphere.
-Soil Erosion and Flooding.
-Destruction of Homelands.
Why are nonrenewable resources used even when renewable resources might be available
Answer:
Why are nonrenewable resources used even when renewable resources might be available? At times, renewable resource use might be less efficient and more expensive than the use of nonrenewable resources.
Explanation:
Non-renewable resources are used very frequently in today's world. nonrenewable resources are used even when renewable resources might be available to cutoff the price and it is more effective.
What is the reason for using non-renewable resources?Nearly, 80 percent of the total amount of energy used each year is from fossil fuels.
Many of the works are dependent on fossil fuels due to they are energy-rich and relatively cheap to process.
Renewable resources can be sometimes less efficient and more expensive than the use of nonrenewable resources.
Thus, these factors can lead to the use of nonrenewable resources even when the option to use renewable resources is available.
For more details regarding natural resources, visit:
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With the help of labelled diagram explain the menstrual cycle in adolescent girls
Answer:
it is diagram okk
Explanation:
female reproductive system undergoes some changes and those changes repeat at interval of every 28-30 days. this repetative changes are called menstrual cycle. it is natural process, controlled by four hormones. those four hormones follicle stimulating hormone,luteinizing hormone, estrogen and progesterone. one of several follicle in ovary starts to develop along with oocyte present in it,under effect of follicle stimulating hormone. developing follicle secrets estrogen. endometrium of uterus starts to regenerate under effect of estrogen. it bursts under effect of luteinizing hormone and oocyte is released. this is ovulation. remaining tissues of burst follicle forms corpus luteum. corpus luteum starts to secrets progesterone. endometrial glands secrets their secretion under effect of progesterone. such endometrium is ready for implantation of embryo.
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The pedigree below tracks the presence of dimples through a family's generation. Having dimples is an autosomal dominant trait.
If individuals II-1 and II-2 have a fourth child, what is the probability that the child will have dimples?
Choose 1 answer:
(Choice A)
A
25%
(Choice B)
B
50%
(Choice C)
C
75%
(Choice D)
D
100%
Answer:
It's 50%
Explanation:
I just did it right.
Answer:
50%
Explanation:
answer on khan
When you eat an apple, you are eating a type of tissue that stores nutrients in plants. Which type of tissue stores nutrients in plants? Please answer quick!
Answer:
Parenchyma cells
Explanation:
Parenchyma cells stay alive, typically helping produce and store nutrients. They constitute the majority of most plants.
{ hope this helps :> }
According to the base-pairing rules for DNA, which statement is not true?
A. A always pairs with T.
B. T always pairs with G.
C. C always pairs with G.
the roots of the gorse plant have bacteria that turn nitrogen gas into nitrate ions. Explain why nitrate ions are needed by the gores plant
Answer:
Nitrate ions are needed by the gores plant for photosynthesis and for producing proteins
Explanation:
Nitrates ion are essential for producing amino acid which in turn is used for producing proteins. Nitrates is taken up by plants through the roots. Nitrates is vey essential for the photosynthesis of the plants. Without nitrate a plant cannot carry out photosynthesis and hence will not be able to produce food for itself and other living beings.
Which feature of viruses prevents them from being classified into a kingdom?
a. They are not living organisms.
b. They are not contagious.
c. They are not virulent.
d. They are not pathogens.
Answer:
A
Explanation:
Were viruses ever alive? Most biologists say no. Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
Answer: A
Explanation: I think the answer is A but I am not sure.. I remember taking that class tho..
Many types of bacteria live inside our digestive tract. What do the bacteria inside our digestive tract do?
they help us break down food, like plant fibers, that we're not so good a handling ourselves.
What is the powdery substance produced by plants to fertilize seeds?
Answer:
pollen
Pollen is a powdery substance consisting of pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells)
Explanation:
WILL GIVE BRAINLIEST
All cells have the SAME genes. True/False
Provide an example of this in humans: answer here
Answer:
Almost all of the cells in your body share the same DNA so false deku here! :3
Explanation:
Answer:
False.
Explanation:
All cells do NOT have the same genes due to genetic variation. The reason we have different genes for different cells is to allow the cells to do different things, otherwise all cells would perform the same function.
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4 points
Which of the following is required for a trait to become more common
over time in a population? *
There must be many varieties of the trait in the population.
The trait must allow members of the population to eat only some kinds of foods.
The trait must be the result of an immediate change in the environment.
The trait must give individuals an advantage in producing offspring that survive.
Answer:Natural selection is a process that causes heritable traits that are helpful for survival and reproduction to become more common, and harmful traits to become more rare. This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation.
Explanation: