Answer:
D
Explanation:
13. When each allele in a heterozygous genotype influences the phenotype and
They have both traits associated with the aileles it is called
Answer:
Polygenic Trait
Explanation:
A taits phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.
Which of these cell parts serves the same function in plants as the skeleton does in animals?
A. Cell walls
B. Vacuoles
C. Chloroplasts
D. Mitochondria
Answer: i think it is B
Explanation:
The majority of animals are insects. True/False
Answer:
the answer is false
Explanation:
the majority of animals are not insects
Describe one of the three types of volcanoes we discussed today.
identify the four types of tissues that make up the human body
PLS HELP !!!!!
El factor Rh- (r) en humanos es una característica que se hereda como un factor recesivo. Determine el genotipo de los parentales de las siguientes familias: - 1er caso: Dos padres con RH+ (R) tienen 5 hijos de los cuales 1 presenta el factor Rh- . - 2do caso: Un padre con factor RH+ y una madre con factor Rhtienen 6 niños de los cuales 3 son RH+ y 3 son Rh- - 3er caso: Un padre con factor RH+ y una madre que presenta un factor Rh- tienen 6 niños de los cuales son todos RH+ . Compruebe los resultados en cada caso. Ayúdenme porfa, estoy desesperada
Answer:
Caso: Ambos padres heterocigostos, Rr (Rh+)Caso: Padre heterocigoto Rr (Rh+). Madre homocigota recesiva rr (Rh-)Caso: Padre homocigoto dominante RR (Eh+). Madre homocigota recesiva rr (Rh-)Explanation:
El factor Rh+ es expresado por un alelo dominante que llamaremos R (Genotipo RR o Rr)El factor Rh- es expresado por un alelo recesivo que llamaremos r (Genotipo rr)1er caso: Dos padres con RH+ (R) tienen 5 hijos de los cuales 1 presenta el factor Rh-
si al menos uno de los hijos presenta el factor Rh-, entonces debe haber recibido un alelo recesivo r de cada padre. Por tanto los padres deben ser heterocigotos para el tipo de sangre Rh.
Parentales) Rr x Rr
Gametas) R r R r
Cuadro de Punnett) R r
R RR Rr
r Rr rr
F1) 3/4 =75% de la progenie es Rh+ (RR o Rr)
1/4 = 25% de la progenie es Rh- (rr)
2do Caso: Un padre con factor RH+ y una madre con factor Rh- tienen 6 niños de los cuales 3 son RH+ y 3 son Rh-
Entre los hijos de esta pareja hay algunos que muestran Rh+ y Rh-.
Si la madre es Rh-, entonces su genotipo es rr y solo tiene alelos recesivos r para pasar a la progenie.
Sabemos que el padre es Rh+, lo que indica que en su genotipo hay al menos un alelo dominante R. Puesto que la mitad de sus hijos tiene factor Rh-, podemos asumir que el hombre es heterocigoto para el tipo de sangre (Rr). De los contrario, de ser homocigoto dominante, toda la descendencia seria Rh+. El padre le hereda a la mitad de los hijos el alelo R y a la otra mitad el alelo r.
Parentales) Rr x rr
Gametos) R r r r
Cuadro de Punnett)
R r
r Rr rr
r Rr rr
F1) 2/4 = 1/2 = 50% de la progenie Rh+ (Rr)
2/4 = 1/2 = 50% de la progenie Rh- (rr)
3er caso: Un padre con factor RH+ y una madre que presenta un factor Rh- tienen 6 niños de los cuales son todos RH+
Si la madre es Rh- su genortipo es rr y solo puede heredarle a los hijos alelos recesivos, r.
El padre es Rh+, con lo que inferimos que el genotipo tiene al menos un alelo dominante R. Puesto que todos los hijos de esta pareja son Rh+, podriamos suponer que el padre es homocigoto para el tipo de sangre Rh+, heredandole a los hijos solo alelos dominantes.
Parentales) RR x rr
Gametos) R R r r
Cuadro de Punnett)
R R
r Rr Rr
r Rr Rr
F1) 100% de la porgenie es Rr, expresando el factor Rh+.
(Nota: Cabe aclarar en este último caso que es posible queel padre sea heterocigoto y aún no hayan tenido un hijo Rh-. )
The small fish is a natural predator of the diving beetle and the heron is a natural predator of the small fish. In an ecosystem, a new resort affected the heron population and caused it to decrease dramatically due to the destruction of their habitat. Ecologists noticed after a while that diving beetles also decreased. What type of interaction is this?
A.) Direct effect interaction
B.) Indirect effect interaction
Answer:
B- in-direct effect interaction
Explanation:
Why is radioactive dating able to be used with such
accuracy?
Answer:
We have rocks from the Moon (brought back), meteorites, and rocks that we know came from Mars. We can then use radioactive age dating in order to date the ages of the surfaces (when the rocks first formed, i.e. when the lava cooled and crystallized). We also have meteorites from asteroids and can date them, too.
Explanation:
Have a great day <3
One example of variation in a snake species is individual organisms having ____________.
Answer:
slight color difference
Explanation:
How are meiosis and mitosis different?
A. Mitosis produces haploid cells and meiosis produces diploid cells
B. Mitosis has anaphase I and II, but meiosis has only anaphase I
C. Chromatids are formed only during the process of meiosis
D. Meiosis produces four cells, while mitosis produces two cells
TYSM <3
Answer:
D
Explanation:
transfer of pollen grains from stamen to stigma is called
Answer:
Hey mate....
Explanation:
This is ur answer.....
Transfer of pollen grains from stamen to stigma is called POLLINATION....Hope it helps u!
Mark me brainliest pls....
FOLLOW ME! ;)
Which statement is not true?
A. A virus cannot read its own genes.
B. Bacteria can make proteins identical to those found naturally in humans.
C. The DNA of a bacterium is loos in the cytoplasm.
D. Bacteria grow and replicate quickly.
Answer: i would say C
Explanation:
When we break down glucose, what energy molecule is produced?
the correct answer is adenosine triphosphate or ATP
4. Do you think recombinant organisms could also pose a threat to a population or ecosystem? Explain.
Recombinant organisms though could pose a threat to the population or ecosystem as they might grow and dominate in a population thereby altering the balance in an ecosystem.
What are Recombinant organisms?Recombinant organisms are organisms whose genes are contains genes from other organisms.
Recombinant organisms are produced by recombinant gene technology.
Recombinant organisms are produced in order to:
make them more resistant to diseases orto give them a desired advantage over other organisms.Recombinant organisms though could pose a threat to the population or ecosystem as they might grow and dominate in a population thereby altering the balance in an ecosystem.
Learn more about about recombinant organisms at: https://brainly.com/question/5996835
Adult muscle cells cannot become another type of cell because
Answer: because they will divide
n mice, having black fur (B) is dominant to white fur (b). If two mice are crossed and the offspring are Bb, what is the phenotype? A Black fur B Grey fur C White fur D Hybrid
Help brainliest involved!!:)
Answer:
the anwser is B. Scrapings from his teeth
Explanation:
hope this helps :)
Answer:
Scrapings from his teeth
Explanation:
He described 'moving animals' in the plaque between his teeth
The full-length (i.e., containing the entire protein-coding region) cDNA for a specific eukaryotic gene in humans is 1500 nucleotides long. You screen a pig genomic library with this cDNA and isolate two genomic clones of different lengths. Both clones are sequenced and found to be 1900 and 2100 nucleotides long from start codon to stop codon. Screening of genomic libraries of several other organisms reveals that all of them contain only one genomic clone -- pigs seem to be the exception to the rule here. What evolutionary events might have led to the presence of two genomic clones in pigs, and the discrepancies in their length compared to the cDNA probe
Answer:
In pigs, this gene suffered duplication and then paralogous genes diverged by accumulating mutations during evolution
Explanation:
Paralogous genes can be defined as evolutionarily related genes that emerged by duplication in a common ancestor of the two species being compared. Gene duplication is one of the most important mechanisms of genome evolution by which paralogous genes arise and acquire novel functions. After gene duplication, one of the two functional gene copies is prone to accumulate mutations because the organism has two genetic sequences to produce the same protein encoded by this gene. In consequence, it is expected that the cDNAs obtained from these genetic sequences show differences in nucleotide length.
help me thank you !!!
Answer:
3
Explanation:
because of the netrowns
If you had to explain the parts of an animal cell to your younger cousin, what comparison or example could you use for the cell and its organelles?
Answer:
a animal cell it tiny little pieces in the animal bodies
How is a solar farm publicly accepted?
Answer:
because people enjoy there solar systems since people will be using less energy and it will be less expensive and also it is very useful
Explanation:
I hope this helps
Which of these statements about cells is correct?
A. Cells must produce their own food.
B. Adult cells are larger than those in a child.
C. Organisms must have more than one cell to grow.
D. Multicellular organisms can have more than a billion cells.
This science but oh well
Answer:
D is the correct statement
Answer:
D Multicellular organisms can have more than a billion cells.
Explanation:
During sexual reproduction, each parent contributes
A
a double helix of chromosomes.
B
one strand of chromosomes, or half of the new organism's DNA.
C
a dominant gene and a recessive gene.
D
multiple mutated cells.
Answer:
[tex]\boxed {\boxed {\sf B. \ One \ strand \ of \ chromosomes \ or \ half \ of \ the \ new \ organism's \ DNA}}[/tex]
Explanation:
Sexual reproduction involves gametes. These are sex cells (sperm for males and eggs/ovum for females).
These sex cells are formed during meiosis. During this process, two rounds of cellular division occur, so there are four resulting haploid cells. Haploid means they contain half of the genetic information.
These cells are haploid because during fertilization, a sperm and egg fuse to form a zygote. Each parent contributes half of the DNA to create one complete set of DNA.
Therefore, the best answer choice is B. one strand of new chromosomes or half of the new organism's DNA.
With complete dominance inheritance, the heterozygotes show a(n) _____ phenotype but with incomplete dominance heterozygotes show a(n) _____ phenotype.
dominant, intermediate
intermediate, dominant
dominant, recessive
lethal, intermediate
Answer:
Dominant, intermediate
How can vestigial structures also be considered evidence for evolution?
They provide evidence for evolution because they suggest that an organism changed from using the structure to not using the structure, or using it for a different purpose.
Example 2: A black cat (BB) is crossed with a tabby cat (BT). Show all the possible genotypes
and phenotypes from this cross. Show all your work, include a regular Punnett Square and one
with superscripts
Answer:
BB BT
BB BT
50% chance or black cat, 50% chance tabby cat
How many X chromosomes do males have in somatic cells?
Answer:
one X
Explanation:
Consequently, all of the somatic cells in human females contain two X chromosomes, and all of the somatic cells in human males contain one X and one Y chromosome (Figure 3).
Answer:
one X
Explanation:
Consequently, all of the somatic cells in human females contain two X chromosomes, and all of the somatic cells in human males contain one X and one Y chromosome (Figure 3).
What do Coronary artery and coronary veins connect the heart with
Answer:
they connect them with the lungs. this is so the blood can be oxygen rich and ready to be carried to places in the body where it is needed
Explanation:
Cyanobacteria is a bacteria that makes its own food by processing sunlight through
photosynthesis. Which role best describes cyanobacteria in an ecosystem?
- Producer
- Decomposer
- Primary Consumer
- Secondary Consumer
PLZ HELP
A dietician is studying the data collected in an experiment performed by a colleague. The experiment was designed to test the hypothesis that abnormally high blood urea nitrogen (BUN) levels are directly related to increased protein. Nitrogen in the blood in the form of urea, called blood urea nitrogen (BUN), is a toxic by-product of the breakdown of proteins and is filtered out of the blood by the kidneys. The results of the colleague's investigation are given below.
30-day Protein Intake vs. Blood Urea Nitrogen Levels
Test Subject
Grams of protein consumed per day
(grams)
Blood urea nitrogen level
(mg/dL)
1
50
6
2
70
15
3
100
50
4
150
30
5
200
40
Currently Recommended Protein Intake
105 g/day*
Normal Blood Urea Nitrogen (BUN)
6–20 mg/dL**
Moderate to Severe Kidney Failure BUN Level
greater than 60mg/dL
* Value suggested is for a healthy 154 pound man who regularly exercises.
** mg/dL means milligrams of BUN per deciliter of blood
Which of the following best describes the dietician's criticism of this experiment, and how does she recommend improving it?
The test subjects may have also consumed carbohydrates and fats during the 30-day trial, so the amount of carbohydrates and fats in the test subjects' diets should be limited.
Since BUN is filtered by the kidneys, reduced kidney function could also explain the BUN levels in the test subjects. Therefore, the kidney health should be measured and only test subjects with fully functioning kidneys should be used.
Since the recommended daily protein intake is 105 g/day for a 154-pound man, the test subjects should all be men of the same weight, and they should all consume about 105 g/day of protein during the 30-day trial.
Since abnormally high BUN levels result from increased protein intake, and high BUN levels can be a sign of kidney failure, the test subjects' protein intake should be limited to 105 g/day and below.
Answer: ANSWER IS B
Explanation:
Since BUN is filtered by the kidneys, reduced kidney function could also explain the BUN levels in the test subjects. Therefore, the kidney health should be measured and only test subjects with fully functioning kidneys should be used.