Answer:
D. N
Explanation:
Meiosis is a kind of cell division which produces daughter cells that are genetically different from the parent cell and have a reduced number of chromosomes (by half).
Meiosis occurs only in reproductive cells to produce gametes. If a diploid (2n) cell undergoes meiosis, a haploid (n) daughter cell will result. This means that the chromosome number has been reduced by half in order to maintain the chromosomal number of the next generation.
The H substance is needed for the proper phenotypic expression of the A, B, and AB blood types in the ABO blood typing system in humans. Individuals who are recessive for the H substance (hh) will have a type O phenotype, even if they have the A and/or B alleles. Two individuals, each with type AB blood and heterozygous at the H locus have children. What is the probability they will have a child who is phenotypically type O?
Answer:
The correct answer is - 4/16.
Explanation:
In this question, it is stated that in ABO blood system the proper phenotypic expression of A, B, AB blood types needs H substance. If an individual has recessive for the H substance (hh) will have a type O phenotype.
The cross: ABHh and ABHh
gametes: two set of AH, BH, Ah, Bh
Punnett:
AH BH Ah Bh
AH AAHH ABHH AAHh ABHh
BH ABHH BBHH ABHh BBHh
Ah AAHh ABHh AAhh ABhh
Bh ABHh BBHh ABhh BBhh
As shown there is only 4 out of 16 offspring are recessive for H substance therefore, only 4/16 will have O blood group
Which statement is true about a cell wall but not a cell membrane?Which solution would most likely cause a plant placed in it to become firmer and more rigid?
Answer:
active transport
Explanation:
NO LINKS PLEASE
What is a major difference between the nitrogen and phosphorus cycles?
O A. Animals excrete only phosphorus-containing compounds to add to the cycle.
O B. Soil erosion removes only phosphorus from its cycle in terrestrial ecosystems.
O C. Only nitrogen is added to its cycle from fertilizers.
OD. Only nitrogen exists as a gas for part of the cycle.
Answer:
D
Explanation:
phosphorus is usually not shown in gas form
Plz im begging you for a answer, my teacher is checking my progress!!!!!!!!!!!!!!!!!!!!!!!!!
Anthropologists have concluded that modern day humans originated from the continent of Africa. Looking at the distribution of skin tones we now see all over the world today explain why this pattern is makes sense for what we see today.
MUST USE AND HIGHLIGHT THE FOLLOWING KEY TERMS: variation, direct sunlight, UV radiation, Vitamin D, folate (folic acid), equator, evolution, parents, offspring, Africa, survival, natural selection, genes, latitude, adapt/adaptation
Answer:
Variation
Ape like creatures where able
to survive in Africa because of survival of the fittest, which meant that only the ones who were able to adapt to the conditions were able to live
Which molecule is used to tell tRNA which amino acid is needed?
A. rRNA
B. mRNA
C. siRNA
Answer:
B. mRNA
Explanation:
anticodon – a sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. The anticodon sequence determines the amino acid that the tRNA carries.
Answer:
B. mRNA
Explanation:
The mRNA is used to tell tRNA which amino acid is needed.
what do you think if humans don't have stimuli?
Meiosis in males produces four identical sperm cells.
A. True
B. False
Answer:
B. False
Explanation:
Meiosis in males, not produces four identical sperm cells.
Meiosis is a type of cell division which involves the reduction in chromosomal content to half. The four daughter cells formed in meiosis are not identical. Thus, the given statement is false.
What is Meiosis?Meiosis is a type of cell division in which the number of chromosomes reduces by half than that present in the parent cell and produces four haploid gamete cells. This process is required to produce both male and female gametes- egg and sperm cells for sexual reproduction.
During the telophase II- last phase of meiosis, cell division is incomplete without another round of cytokinesis. Once the cytokinesis is complete there are four daughter cells, each with half a set of chromosomes (haploid) which are different due to the crossing over between chromatids.
Learn more about Meiosis here:
https://brainly.com/question/11622266
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Water that is dense will float while water that is less dense will sink.
True or false ?
Answer:
If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.
what is the answer pleaseeeee?????
Answer:
75% brown 25 % green....m
What might happen if genetically modified deer mice with white fur where accidentally released into the wild population of mice? Explain what would happen to each population of mice, brown and
gray. Discuss how the addition of this genetic variation will affect the future generations of mice.
Answer:
They die.
Explanation:
If genetically modified deer mice with white fur were accidentally released into the wild population of mice, they will die and decrease in population because these genetically modified deer mice with white fur can't survive harsh conditions of the mice. Their colour also attract the predators at night so they catch these genetically modified deer mice with white fur and feed on them which automatically decrease its population.
What happens if you throw a rock hard enough? (Explain escape velocity)
Answer:
it would probably break something depends on were you are
Explanation:
explique le phénomène d'effet de serre
Answer:
mi no speak e de spanish
Explanation:
gay pride
Question 20 of 20
Which is the best description of a normal fault?
Answer:
A fault, which is a rupture in the earth's crust, is described as a normal fault when one side of the fault moves downward with respect to the other side. The opposite of this, in which one side moves up, is called a reverse fault.
Answer:
A fault that forms at a divergent boundary
Explanation:
a p e x
modern example of the scientific revolution
Answer:
Explanation:
One example of the Scientific Revolution is the Copernican revolution; it is the move from geocentric to the heliocentric view of the solar system.
. Which of these is a response of cats to external stimuli?
A hairs on the back stand up when scared
B decreased heart rate when sleeping
C movement of waste into the bladder
D temperature increases during an infection
Answer:
A. hairs on the back stand up when scared
Explanation:
B and C are not responses to stimuli, and D is a response to internal stimuli
which process produce two genetically distinct haploid cells
Answer: mitosis
Explanation:
Explain what happens to an animal cell when it removed from an organism and placed into distilled water
Answer:
I think it has to do with osmosis
Explanation:
Osmosis is the process of having water pass from a low concentration medium to a high concentration one, given that the barrier (membrane) is semi-permeable.
When a cell is placed into distilled water, hypertonic solution takes place.
A cell may contain many solutes so it is considered hypertonic when compared to distilled water which is hypotonic So in this case, when a cell is placed in distilled water, water moves from outside of the cell to the inside leading to swelling of the cell.
Fossil evidence has demonstrated that birds evolved from a group of small carnivorous dinosaurs. Scientists have hypothesized that some evolved into birds as they filled available niches. The most recent fossil discoveries have filled in many of the gaps in the evolution of birds from dinosaurs. Before the latest fossils were found, there were some scientists who questioned this idea that birds evolved from dinosaurs. In general, scientists constantly work to
Answer:
To find out the relationship of birds from dinosaur.
Explanation:
Scientists constantly work to find out the evolution of birds from dinosaur and relationship exist between them. Scientists do hard work in order to find out the evidences that shows and confirm the relationship of birds and dinosaur. These new discoveries provides evidences about the evolution and relationship between birds from dinosaur so we can conclude that scientists constantly find out the relationship between these two organisms.
which function in plant cells is comparable to an animal eating food?
Answer:
Chloroplasts absorbing solar energy for cellular activities. I hope this helped :))
Explanation:
which best describe the sex chromosomes
where are the options for the question??
I’m pretty sure it’s correct but if someone could double check pls
it would be testies and ovaries
What are the non-living components of an ecosystem?
PLS ANSWEr NOWWWWWWWWWWWWWWW
Answer:
The answer for the third picture I believe is decomposers
Answer:
I believe that it's the last answer
An ecosystem is when plants and animals interact with each other in a specific area.
Questions are in the attachments I’ll give a brainlist
cleavage
in cleavage there is division of cell without growth of cell
This processes is controlled by
A. RNA
B. DNA
Answer:
DNA
Explanation:
DNA is a full spyral of priens hooked together to hold out genetic information. RNA is only a half of the spiral
Answer:
B. DNA
Explanation:
This processes is controlled by the DNA.
que tipo de relación existe cuando una especie que utiliza a otra como vivienda
While working in a lab you break the tip of a scaffold what is the appropriate action to take
What risk is most likely to happen when using wind as an energy source
Answer:
As with all energy supply options, wind energy can have adverse environmental impacts, including the potential to reduce, fragment, or degrade habitats for wildlife, fish, and plants. Furthermore, spinning turbine blades can pose a threat to flying wildlife like birds and bats.
gametes are sperm and egg cells. True or false
Answer:
The correct answer is True
❗️❗️EARTH SCIENCE CLASS ❗️❗️Climate factors are the things that established and have changed the Earths climate for billions of years. Which one does include changing the amount of CO2 in our atmosphere
Answer:
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay, or release gas), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement. Which this also adds to the temperature increase around the world due to our atmosphere keeping all of this CO2.