Answer:
DdRr
Explanation:
The parents are heterozygous with the genotype DdRr.
Assuming the two genes are independently assorting. For standard, independently assorting genes, the phenotypic ratio for a dihybrid cross should be 9:3::3:1 with the domiant parental gene having the highest frequency, the recessive parental genes having the lowest frequency and the recombined genes having the intermediate frequencies.
DdRr x DdRr
Progeny
9 D_R_ normal size, brown coat
3 ddR_ dwarf, brown coat
3 D_rr normal size, white coat
1 ddrr dwarf, white coat.
The phenotypic frequency is 9:3:3:1.
Now let us look at phenotypic frequency of the outcome
18:6:6:2 is also equivalent to 9:3:3:1.
Hence, the parents are hetezygous with the genotype DdRr.
Which of the following is a renewable resource used for human needs?
A) rocks
B) fossil fuels
C) water
D) minerals
Water is a renewable resource used for human needs. So, the correct option is C.
What are Renewable resources?Natural resources that regenerate with time and can be used endlessly without getting exhausted are known as renewable resources. These resources are often derived from sources such as sunlight, wind, water and biomass that can regenerate or replenish themselves.
Because they provide a source of energy and materials that can be used without negatively impacting the environment or depleting resources, renewable resources are an important component of sustainable development. Water is a renewable resource used for human needs.
Renewable resources are becoming more and more important as a sustainable alternative to non-renewable resources such as fossil fuels, which are limited and can adversely affect the environment.
Therefore, the correct option is C.
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What does the circulatory system do?
A. Sends hormones to the body
O B. Moves blood around the body
C. Brings oxygen into the body
O D. Defends against invaders
Moves blood around the body
The circulatory system moves blood around the body. Therefore, option (B) is correct.
What is circulatory system?The circulatory system, also known as the cardiovascular system, is responsible for the circulation and transportation of blood, oxygen, and nutrients throughout the body. It includes the heart, blood vessels, and blood. The heart pumps blood to the lungs to become oxygenated, and then circulates the oxygen-rich blood to the rest of the body through arteries.
Veins carry deoxygenated blood back to the heart, where it is pumped to the lungs to receive oxygen. The circulatory system also plays a role in removing waste products from the body, such as carbon dioxide, and helps to regulate body temperature, pH balance, and fluid balance. The circulatory system is essential to maintaining the proper functioning of all cells, tissues, and organs in the body.
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WILL MARK BRAINIEST PLS HELP!
Using the traits and alleles from this chart, indicate the possible genotype(s) for the following plants:
22. Homozygous wrinkled ……………………………………………………………..
23. Homozygous round …………………………………………………………………..
24. Round heterozygous…………………………………………………………………..
25. Green hybrid…………………………………………………………………..
26. Heterozygous green pods…………………………………………………………………..
27. Yellow pods…………………………………………………………………..
28. Short stems…………………………………………………………………..
29. Tall stems…………………………………………………………………..
30. Yellow seeds…………………………………………………………………..
31. Pure tall stem ………………………………………………………………….
32. Homozygous tall stem…………………………………………………………………..
33. Heterozygous tall stem…………………………………………………………………..
Answer:
look below
Explanation:
22. rr x rr
23. RR x RR
24 Rr x Rr
25. ??
26. Gg x Gg
27. gg x gg
28. ll x ll
29. Ll x LL
30. YY x YY, Yy x Yy
31. LL x LL , Ll x Ll
32. LL x LL
33. Ll x Ll
the distance from earth to the north star is about 430 light years. which of the following statements describes why scientists use the light year unit to measure distances in space?
a. a light year unit is very small and distances in space are very small
b. a light year unit is very small and distances in space are very large
c. a light year unit is very large and distances in space are very small
d. a light year unit is very large and distances in space are very large
Answer:
i am not sure but i think is D
A light year unit is very large and distances in space are very large. So, the correct option is D.
What is Light year?A light year is defined as the larger unit of length which is used to express astronomical distances and is approximately equal to 9.46 trillion kilometers or 5.88 trillion miles.
A light-year is expressed as the distance that light travels in a vacuum in one Julian year, which is 365.25 days because it includes the term "year", the term light-year is sometimes misunderstood as a unit of time.
1 light-year = 9460730472580800 metres
Light year is used as a unit to express distances to celestial objects, for example, if a star is 4 ly away from earth, it means that light from the star will take 4 earth years to reach us.
Therefore, a light year unit is very large and distances in space are very large. So, the correct option is D.
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Which of these describes the gravitational force from a planet?
Choose the correct answer.
large and pulls objects toward itself
small and pulls objects toward itself
large and pushes objects away from itself
small and pushes objects away from itself
10. A covalent bond forms between two
DLL
Answer:
A covalent bond forms between two Nonmetals!
Explanation:
A covalent bond always forms between the electrons of two Nonmetals.
hope it helps!
The predator
population peaks____
the prey
population
Please help!!!!
Answer:Just after
Explanation:As the prey population rises the more food there is for the Lynx
The prey is the "hare."
Classified by the black line.
The predator is the "lynx."
Classified by the dotted line.
All we need to do is find the peak of the waves.
The hare population peaks towards the beginning of the graph.
The lynx population peaks just after that of the hare population.
Therefore, the answer is [ D. just after ]
Best of Luck!
A carbohydrate is broken down into smaller sugars, this is an example of what type of energy?
A.chemical
B.mechanical
C.sound
D.nuclear
what did robert paine do with the purple star fish
Answer:
This is what i found
They are found in soil and get into our bodies by…
Answer:
i think the answer is micro nutrient
true or false aerobic cellular respiration produces more atp then anaerobic cellular respiration
Answer:
true
Explanation:
Lipids are made mainly of
Answer:
Lipids are composed mainly of carbon and hydrogen. but they can also contain oxygen, nitrogen, sulfur, and phosphorous. They provide nutrients for organisms, store carbon and energy, play structural roles in membranes, and function as hormones, pharmaceuticals, fragrances, and pigments.
Explanation:
I hope this helps! :)
Answer:
triglyceride.
Explanation:
Select the living organisms that will decrease as a result of the loss of coral in the food web (Other answers besides the ones in green please)
Answer:
Parrotfish
Triggerfish
Butterfly fish
Explanation:
these three are the ones that eat the coral directly
this is why they are going to be the ones who are the most affected said the coral dies out
Hope this helps!
My opinion about Energy transfer in chemical reactions???? Please help
Answer:
Energy transferred during a chemical reaction. ... In an exothermic reaction, the potential energy of the system goes down, and heat is given out. In an endothermic reaction, the potential energy of the system goes up, and heat is taken in.
Explanation:
5 PLZ HELP 12points+
Select the correct answer.
If the population of rabbits in this ecosystem decreased dramatically because of certain environmental changes, which organisms’ food supply would decrease?
A.
owl and snake
B.
jackal and wildcat
C.
green plant and mouse
D.
goat and wildcat
Answer: B, the jackal and wildcat
Which of the following terms would be an appropriate title for the level of complexity labeled Y?
5 points
Captionless Image
A : Cell
B : Tissue
C : Organ
D : Organ System
Answer:
D: Organ System
Explanation:
This is beacuse you can see that all of the terms in level Y -- respiratory, nervous, skeletal, and circulatory -- all each consist of two types of organs. This shows that they are on a level higher than that of organs -- organ systems.
Answer:
d:organ system
Explanation:
Where is DNA located in your body?
Answer:
DNA is in the nucleus of nearly every cell in your body.
Explanation:
DNA is housed in the nucleus because it is the genetic material and needs to be protected.
Answer:
The DNA is located in the nucleus.
Explanation:
Humans and animals are EUKARYOTES which means we have a nucleus, where the DNA is stored. PROKARYOTES do not have a nucleus to the DNA is stored in the cytoplasm.
~Anna
Choose an organism to use as an example.
Answer:
Bacteria
Explanation:
humans, plants, fungi and bacteria are a type of organism
Which of the following molecules link together to form starch? A. Glucose B. Galactose C. Fructose
Some structures, like the leg bones in the modern day whale, no longer have a useful
function but it is believed that once upon a time they did have a specific function. These
type of structures are called:
4. What is evolution? Explain how artificial selection causes populations to change.
Answer:Artificial selection is the process by which humans choose individual organisms with certain phenotypic trait values for breeding. If there is additive genetic variance for the selected trait, it will respond to the selection, that is, the trait will evolve. evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. Evolution can an animal to make it almost unrecognisable, like cephalopods and how they evolved to make them more buoyant
Can someone help me please ?
Answer:
Purified water is good because it does not have the toxins,But for the animals the are used to drinking that
Explanation:
What is displacement of metals?
I need help ASAP please
Use the diagram to answer the following questions.
A
B
S
C
G
S
TA
P
S
S
G
P
S
C
The sides of the helix labeled as A are made of
groups.
Answer:
Explanation:
Im super confused?
Can you explain more?
At the very beginning of translation, the first tRNA molecule __________.
binds to the mRNA's start codon
binds to the mRNA's anticodon
attaches directly to the DNA codon
connects an amino acid to its anticodon
Do you think plants will grow better under a grow light or with the sun? Explain your answer.
Answer:
The Sun
Explanation:
I chose this because i think because the Sun is natural light and the grow light isn't it will grow better,
One breezy spring, many rabbits are born in a forest. During the warm summer, several wolves move to the forest and many plant-eating birds fly away.
Which is a limiting factor that would most likely decrease the rabbit population?
breezy spring weather
warm summer weather
wolves moving to the area
birds leaving the area
Answer:
wolves moving to the area
Explanation:
Answer:
wolves moving to the area
Explanation:
wolves would eat the rabbits
Please help! 25 points:)
Answer:
D. IV -> III -> II -> I
Explanation:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
If you drive at 100 m/s for 36,000 s how far will you go ?
Answer:
Distance = 3,600,000 m
Explanation:
Distance = Speed × Time
Distance = 100 × 36,000
Distance = 3,600,000 m
2. What are the two types of ecological succession?
Answer:
There are two main types of succession, primary and secondary. Primary succession is the series of community changes which occur on an entirely new habitat which has never been colonized before. For example, a newly quarried rock face or sand dunes.
Explanation:
Answer:
Ecological succession is a process of change in ecosystems that takes place over time, and that we can observe both in time and in space. ... There are two types, the primary sequence and the secondary sequence.
"I hope it helps you it was a pleasure to help you".
Explanation:
