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Related Questions
In a unique species of plants, flowers may be yellow, blue, red, or mauve. All colors may be true-breeding. If plants with blue flowers are crossed to red-flowered plants, all F1 plants have yellow flowers. When these produced an F2 generation, the following ratio was observed: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve. Determine the F1 results of a cross between true-breeding red and true-breeding mauve flowered plants.
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Answer:
F1) 100% bbRr, red flowered plants.
Explanation:
Available data:
flowers may be yellow, blue, red, or mauvecolors may be true-breedingthe cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowersF2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).
According to the first cross, we might establish the following genotypes:
1st Cross: blue-flowered plant x red-flowered plant
Parentals) BBrr x bbRR
Gametes) Br, Br, Br, Br bR, bR, bR, bR
F1) 100% BbRr, yellow plants
Parentals) BbRr x BbRr
Gametes) BR, Br, bR, br
BR, Br, bR, br
Punnett square) BR Br bR br
BR BBRR BBRr BbRR BbRr
Br BBRr BBrr BbRr Bbrr
bR BbRR BbRr bbRR bbRr
br BbRr Bbrr bbRr bbrr
F2) 9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR
3/16 blue ------> 1/16 BBrr + 2/16 Bbrr
3/16 red---------> 1/16 bbRR + 2/16 bbRr
1/16 mauve ----> 1/16 bbrr
So,
Yellow-flowered plants: BBRR, BBRr, BbRR, BbRrRed-flowered plants: bbRR, bbRrBlue-flowered plants: BBrr, BbrrMauve-flowered plants: bbrrAccording to these genotypes, the second cross would be like following,
2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.
Parentals) bbRR x bbrr
Phenotype) Red Mauve
Gametes) bR, bR, bR, bR br, br, br, br
Punnett square) bR bR bR bR
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
F1) 100% bbRr, red flowered plants.
Which of the following would show the Dominant Genotype? (Choose all that apply)
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Answer:
The first one and second one
Explanation:
How would Darwin explain the change the length of the giraffes neck ?
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Answer:
There were mutations that led to some longer necks and some shorter necks, as the trees became taller, the short necks died out due to starvation, leaving behind only the longer necked giraffes. Survival of the fittest.
Which scientific area has the most influence in shaping modern classification methods?
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Answer: The answer is " evolution". Evolution is a major force in shaping modern classification methods. Evolution is the adjustment in the qualities of an animal categories more than a few ages and depends on the procedure of common determination.
The scientific field which has had the greatest influence on shaping modern classification methods is Evolution.
What is Evolution?Evolution is concerned with the sequence of changes which occur in organisms as they transform from their ancient forms to their modern forms.
It is the change in the genetic characteristics of a biological population over successive generations. These characteristics are manifestations of genes passed from parents to offspring during reproduction.
The three main types of Evolution are:
1. Divergent Evolution
2. Convergent Evolution
3. Parallel Evolution
Thus, the scientific field which has had the greatest influence on shaping modern classification methods is Evolution.
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Clear-winged dragonflies live longer and can reproduce
many more times than yellow-winged dragonflies.
How is this population of dragonflies most likely to change as a result of this
difference?
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Answer:
Yellow-winged dragonflies will most likely decrease and eventually die out on account of being easily spotted by predators.
Answer: Clear-winged dragonflies will become more common over time.
if the skeletal muscle cells in your leg are performing lactic acid fermentation to produce the necessary ATP for their proper functioning, decribe what is happening to the O2 gas you are breathing
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Answer:
The O2 gas in uses in Aerobic Respiration and That O2 is performing that process to make ATP for your body and making glucose to function your body
Explanation:
Lactic Acid Fermentation is Anaerobic Respiration which doesn't Involve Oxygen
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2. Which is the correct structural organization of a plant?
A. Atom-Cell Tissue- Organ- Organ System Molecule-Cell
B. Cell Tissue- Organ Organ System
C. Atom Molecule Cell Tissue- Organ— Organ System- Organism
D. Atom Molecule- Cell Organ - Tissue Organ System Organism
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how is the hydrosphere connected to the lithosphere
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Answer:
Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (lithosphere), or evaporating into the air (atmosphere). Humans (biosphere) harness energy from the water (hydrosphere) by having it spin turbines (lithosphere) to produce electricity.
Explanation:
What does the ratio 3:1 mean?
Pls answer
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Answer:
ratio of 3:1 means that there are 4 parts altogether. The fractions from the ratio can therefore be deduced as. 34and14. These represent the percentages: 75%:25%
. Two students are discussing natural selection in bacteria and how it can relate to antibiotic resistance in
bacteria.
Bernadette states that when antibiotics are used, bacteria can respond by developing traits to help them
defeat the antibiotic, which then may increase their fitness.
Dominique states that there is already a variety of traits among the bacteria. Bacteria that have traits that
allow them to survive the antibiotic and reproduce may have higher fitness.
Which individual's reasoning do you agree with more and why
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Answer:
Bzryh
Explanation:
because he won
Where do lizards get their tail length
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Explanation: long-tailed helps a lizard with balance. It provides a fat reserve for the lizard in times of starvation. A lizard uses its tail to communicate its feelings and its social status. Lizards detach their tails as a defense mechanism.
Which body system is responsible for storage in animals?
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Hope it will help you...
What evidence indicates that the Earth is 4.6 billion years old?
using carbon 14 dating methods on earliest life forms
using the radiometric dating of early Earth rocks
calculating the cooling rate of the Earth's mantle
adding up the layers of rock strata
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Answer:
Is THe Second One -using the radiometric dating of early Earth rocks
Explanation:
I took the quiz(plase mark me brainlist)
Two substances, both solids, start at the same temperature. You transfer the same amount of energy
into both solids, but substance 1 becomes a liquid before substance 2. Based on this evidence, which
substance has a stronger molecular attraction?
Substance 1
Substance 2
PLS HELP
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Which sentence should be added to the introductory paragraph at the point
indicated to best provide background information about the topic?
What happens when a dentist and a candymaker meet? Together,
William Morrison, a dentist, and John C. Wharton, a handymaker,
invented the modern version of cotton candy, a treat popular with both
the young and old. The two sold their cotton candy at the Paris
Exposition in 1900 and the St. Louis World's Fair in 1904 for 25¢ a box,
and the rest is history. The fascinating story of how cotton candy
found its place in American culture is as sweet as the treat itself.
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Discuss the similiarities between
Bryophytes and
Pteridophyte
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Answer:
Similarities between Bryophytes and Pteridophytes
Ø Both Bryophytes and Pteridophytes are land plants. Ø Both possess distinct Gametophytic and Sporophytic generations. Ø Both groups show heteromorphic alternation of generation. Ø Rhizoids are present in Bryophytes and Pteridophytes
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Both bryophytes and pteridophytes prefer to grow in moist and shady habitats.
Both need water for the act of fertilization.
In both bryophytes and pteridophytes sexual reproduction is oogamous type.
Both show heteromorphic alternation of generation.
Both bryophytes and pteridophytes have sporic meiosis.
One trait not typically associated with a bureaucracy is _____.
flexibility
multiple forms
red tape
multi-tiered decision-making
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Answer:
flexibility
Explanation:
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During mitosis, micro tubes attach to chromosomes at the ____
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what is the purpose of the article The Amazing World Inside a Human Cell
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Do cell membranes contain proteins, but phospholipids and cholesterol
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Answer:
In addition to lipids, membranes are loaded with proteins. In fact, proteins account for roughly half the mass of most cellular membranes. Many of these proteins are embedded into the membrane and stick out on both sides; these are called transmembrane proteins.The cell membrane contains a phospholipid bilayer, but the terms are not interchangeable.In addition to the phospholipids, the plasma membranes of animal cells contain glycolipids and cholesterol. ... Because the interior of the phospholipid bilayer is occupied byExplanation:
The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins.24. Natural selection (1 point)
A is directionless
B is random
C guides evolution
D does not exist
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Answer:
c
Explanation:
list 5 disorders that affect female reproductive system an discuss them
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Answer:
Endometriosis.
Uterine Fibroids.
Gynecologic Cancer.
HIV/AIDS.
Interstitial Cystitis.
Polycystic Ovary Syndrome (PCOS)
Describe what animals do during
competition.
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When a stimulus reaches the threshold..........in the plasma membrane open.
Sodium bannel
led ne channel
Potassium channel
Calsam channel
Answer and I will give you brainiliest
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Answer:
Sodium channel
my answer
The larvae of frogs are called ___________.
tadpoles
toadstools
pups
hatchlings
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Answer:
tadpole
Explanation:
The larva of a frog is referred to as a tadpole, and they look similar to small fish. Tadpoles have small gills and a tail, along with a mouth. Tadpoles don’t tend to move around much at first, staying stationary for the first couple weeks after hatching.
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Which organisms perform photosynthesis in the ocean?
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Answer:
Bioplaykton
Explanation:
Which body sense (choose only 1) do you think is most important? Explain why and provide at least 2 examples. (Your essay must be 1-2 paragraphs).
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Answer:
I believe sight is the most important body sense. Our eyes are able to protect us from danger and allows us to complete many day to day functions. Without our sight, we could be much more easily placed into harms way. Our eyes take over to ensure we are prepared for anything we may encounter.
Explanation:
How much more acidic is a pH of 5 compared to a pH of 6?
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A ph of 5 is 10 times more a acidic than a ph of 6.
A ph of 4 is 100 times more acidic than a ph of 6
If a molecule is too large to pass through a cell membrane, it will need to use a
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What is NOT a function of the nucleus?
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Answer:
The nuclues cannot help modify proteins.
Explanation: