Answer:
Crossing over
Explanation:
This exchange of genetic material is called chromosomal crossover, or crossing over.
Cross a person who does not have freckles and is heterozygous for dimples with a person who has
freckles (but her mom does not) but no dimples.
1. What is the probability that these parents will have a child with dimples?
2. What is the probability that these parents will have a child with freckles?
3. What is the probability that these parents will have a child with dimples and freckles?
Answer:
1. 1/2
2. 1/2
3. 1/4
Explanation:
Let the allele for freckles be A or a while that of dimples be B or b.
A person without freckles but heterozygous for dimples = aaBb
A person who has freckles (whose mother has no freckles) but no dimples = Aabb
aaBb x Aabb
Offspring
4 AaBb - freckled and dimpled
4 Aabb - freckled and non dimpled
4 aaBb - non freckled and dimpled
4 aabb - non freckled and non dimpled
1. Probability that the parents will have a dimpled child = 8/16 or 1/2
2. Probability that they will have a child with freckles = 8/16 or 1/2
3. Probability that they will have a child with freckles and dimples = 4/16 or 1/4
See the attached image for the Punnet's square analysis of the cross
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Answer:
Offspring
Explanation:
You pass down traits to your offspring. Your offspring inherit from you.
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A scientist is conducting research about all the plants and wildlife in the Mojave Desert as well as the desert’s resources, such as water and soil. The scientist is studying
Answer:
An ecosystem
Explanation:
Answer:
D. an ecosystem
Explanation:
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Measurements of physical ocean characteristics are often taken at the time and place of phytoplankton sampling.
a. True
b. False
23. A PCR reaction is performed, and the negative control demonstrates the presence of a detectable number of PCR product (amplicons) by capillary electrophoresis. What is the most likely cause?
Answer:
Contamination of the control sample (negative control) with DNA
Explanation:
The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology laboratories to amplify a target DNA fragment using primer pairs and DNA polymerase. In PCR experiments, it is imperative to include both positive and negative controls. The positive control refers to the amplification of a PCR product (amplicon) of known molecular size during PCR reaction in order to ensure the correct molecular weight of the target DNA fragment. The negative control refers to the inclusion of a sample without DNA in order to ensure that no contamination with DNA has occurred in the other samples.
Select all that apply to the evidence of evolution:
A homologies- anatomical, molecular, and developmental
B biography
C natural selection
D fossil record
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PLEASE HELP 11. A group of lizards living in a desert would be an example of what? (5 points)
Population
O Shelter
O Succession
O Food web
What are paired chromosomes called?
Answer:
Humans have 23 pairs of chromosomes--22 pairs of numbered chromosomes, called autosomes, and one pair of sex chromosomes, X and Y. Each parent contributes one chromosome to each pair so that offspring get half of their chromosomes from their
Which of the following statements is true?
In humans, fertilization creates a cell with 23 chromosomes.
All organisms have the same number of chromosome pairs.
Females have a 100 percent chance of inheriting Y-linked genetic disorders.
Males are more likely to be colorblind because they only have one X chromosome.
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use "glucose" in a sentence
20 points and brain thing-a-ma-bob
Answer:
Insulin is used to control the rise of glucose levels in the blood
What is the natural source of energy in Mars, please help
Answer:
The power source is called a "Multi-Mission Radioisotope Thermoelectric Generator" or MMRTG for short. The MMRTG converts heat from the natural radioactive decay of plutonium into electricity. This power system charges the rover's two primary batteries. The heat from the MMRTG is also used to keep the rover's tools and systems at their correct operating temperatures.
Answer:
the sun
Explanation: the sun proides the heat energy
Scientists recently studied the reproductive behavior of a yeast species. They noticed a new species emerged from two populations. This new species formed after the yeast were exposed to signaling molecules called pheromones. Both male and females release pheromones, which bind to cell surface receptors. Pheromones from the male bind to female cells. The opposite is true for pheromones secreted from female cells. This signaling action causes the yeast to change their sex type.
Explain how this phenotypic plasticity is beneficial.
Answer:
Phenotypic plasticity in yeast cells is beneficial because this allows the yeast to change its phenotype of being a male or female. This plasticity depends on the type of pheromone exposure. The ability to change phenotype increases the reproductive success of yeast cells. This condition is useful for yeast, especially if they must adapt to changes affecting their reproduction and survival. By having phenotypic plasticity, the yeast can continue to grow its population size.
Answer:
When the yeast is exposed to a pheromone, its phenotypic plasticity allows it to change its sex type, meaning if there is a yeast molecule that is releasing pheromones close to another molecule of yeast, the latter molecule will change its sex type to the opposite sex, if necessary, to reproduce. The yeast's phenotypic plasticity regarding sex type allows it to grow the population more effectively, helping the species survive.
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Answer:
The answer is simple sugar
Explanation:
Choose...
is the gradual change in living things over long periods
Extinction
Migration
evolution
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Which of the following increases soil acidity?
planting acid-loving plants
adding compost
adding aluminum
acid rain
Answer:
acid rain
Explanation:
Answer: The correct answer is acid rain
Explanation: This answer has been confirmed correct.
A(n) _____ is a thick film of protein secreted by mucous membranes in the mouth that coats teeth and provides a substrate for Stretptococcus mutans to adhere and begin the formation of a slime layer.
Answer:
The correct answer is - the biofilm.
Explanation:
Biofilms are a type of one or more than one type of microbes that grow on many different surfaces, These microbes include fungi, bacteria, and protist that develop attached to the surface and one another and embedded in a self-produced matrix.
It is a thick film of protein such as fibrin, polysaccharides such as alginate or eDNA secreted by the bacteria, and other microbes that cover the teeth surface.
Select all the true statements about density: (hint - there are 4 correct statements)
d=m/v (denisty equals mass divided by volume)
density is measured in meters
density is the ratio of an objects mass to its volume
objects that are heavy for their size are very dense
objects that are heavy for their size are not dense
density is how much matter is in a given amount of space
all dense objects will float
(there is more then 1 answer by the way)
answer
2nd is wrong
5th is wrong
last is wrong
Why might a vaccine make someone sick?
Please help this is due today.
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Answer:
B.
Explanation:
The Punnett square shows the genotype for scale color in a species of lizard where color is inherited via incomplete dominance. Y
is the allele for yellow
scales, and is the allele for red scales. What percent of the offspring will have yellow scales?
R R
Y
?
?
R?
?
?
A 2/4 -50% will have yellow scales.
4/4 - 100% will have yellow scales.
1/4 - 25% will have yellow scales.
0 0/4 - 0% will have yellow scales.
Answer it is 25 percent
Explanation:
When the salinity in an ocean has decreased what action has taken place.
Answer:
water had been added
Explanation:
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Using Newton's second law explain how a rocket can have an increase in acceleration over time
Answer:
According to Newton's second law: the acceleration of an object is inversely proportional to it's mass, so if you decrease it's mass while keeping the net force the same, the acceleration will increase.
Explanation:
hope this helped...
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What is one event that may occur during Telophase I?
An event that may occur during Telophase I is: the nucleus of each cell may reappear as two independent cells are being formed.
Meiosis can be defined as a type of cell division or duplication that occurs in all body cells found in living organisms, through which a single cell divides twice to produce four (4) haploid cells (gamete).
Basically, deoxyribonucleic acid (DNA) must replicate before meiosis can occur in all body cells found in living organisms.
Generally, the phases or steps that occur during meiosis include:
Prophase I.Metaphase I.Anaphase I.Telophase I.Prophase II.Metaphase II.Anaphase II.Telophase II.Sometimes, the nucleus of a single cell may reappear when two (2) independent cells are being formed during Telophase I.
Read more: https://brainly.com/question/12103012
Scientists have discovered that there are reproductive isolating mechanisms that can stop a population from interbreeding and possibly lead to the formation of a new species. What is this process called
Answer:
Polyploidy
Explanation:
The isolating mechanism that is capable of stopping a population from interbreeding, possibly leading to speciation is polyploidy.
Polyploidy is a condition in which a species of an organism will have multiple, instead of a diploid, chromosomal set as a result of an error during meiosis.
Non-disjunction during meiosis can make a gamete have a diploid number of chromosomes in the place of a haploid chromosome. A 2n gamete fusing with an n gamete will result in a triploid organism, 2n plus 2n gametes will result in a tetraploid organism, etc.
If the extra chromosomal set is from the same species, such polyploidy is termed autopolyploidy, otherwise, it is termed allopolyploidy. Having extra sets of chromosomes has the capacity to make an organism to be reproductively incompatible with normal diploid organisms of the same species. However, polyploid organisms can either self-pollinate or cross with another polyploid organism, a process that can lead to sympatric speciation.
Answer the question in the picture
zvanswerefh
Explanation:
Riddick DM Inc cucumber CTN ay be bunching
CUCKOO AND WARBLER symbiotic relationship?
Answer:
The relationship between the Cuckoo Bird and the Warbler is a parasitic symbiotic relationship.
Explanation:
The Warbler lays their eggs in the Cuckoo bird's nests that their offspring can be cared for by the other bird. The Warbler benefits by not having to care for their young while the Cuckoo bird is harmed by having to care for the extra birds in their nests.
In order to insert a human gene into a plasmid, both must _____In order to insert a human gene into a plasmid, both must _____have identical DNA sequencesoriginate from the same type of cellcode for the same gene productbe cut by the same restriction enzymebe the same length
Answer: be cut by the same restriction enzyme resulting in the formation in the formation of the complementary sticky ends.
Explanation:
I hope this helped
What does ambulocetus translate to?
Ambulocetus (meaning "walking whale") is an early cetacean with short limbs and large feet used for swimming. Along with other members of Ambulocetidae, it is a transitional fossil that shows how whales evolved from land-living mammals.
Answer:
Walking whale that swims
Explanation:
its a cetacean with short limbs and large feet used for swimming
Write a short paragraph that explains the relationship between the terms "chromosome," "gene," "DNA," and "allele."
Answer: Genes appear throughout the length of each chromosome, and each chromosome pair has a unique set of genes. ... In a diploid organism, the two corresponding genes in a chromosome pair, or alleles, might be identical or might have different base sequences. Each parent contributes one allele in each pair.Alleles are different forms of same gene. Genes are linearly arranged on chromosomes. Chromosomes contain genetic material of cell i.e. DNA. So chemically alleles, genes, chromosomes are all DNA !
Explanation: