Answer: Both combinations result in heterozygous dominant offspring, meaning the offspring will have a combination of red and white color. Therefore, the correct answer is c) Red and white cows (heterozygous dominant).
Explanation:
When a red cow (homozygous dominant) is crossed with a white cow (homozygous dominant), the offspring will inherit one allele from each parent. In this case, the red cow has two copies of the dominant allele for red color (RR), and the white cow also has two copies of the dominant allele for white color (WW).
The dominant allele for red color (R) is represented by a capital letter, and the dominant allele for white color (W) is also represented by a capital letter. Since both parents are homozygous dominant, their alleles do not carry the recessive allele for black color (r). The recessive allele for black color is represented by a lowercase letter.
When the red cow (RR) is crossed with the white cow (WW), the offspring will inherit one allele from each parent. Therefore, the possible combinations of alleles in the offspring are:
- Red cow (R) from the red parent and white cow (W) from the white parent: RW
- White cow (W) from the red parent and red cow (R) from the white parent: WR
It's important to note that this explanation assumes a simple Mendelian inheritance pattern and does not take into account other factors that could influence color inheritance in cows.
differentiate living and non-living things.?
Difference Between Living & Non-Living Things.
Answer:
To List Is:
i) Excretion
ii) Sensitivity
iii) Growth
iv) Reproduction
v) Respiration
vi) Nutrition
Explanation: Description:
(a) Excretion: Is the process by which living things remove metabolic waste substances from the body.
(b) Sensitivity: Is theprocess by which living things responds to stimuli or touch.
(c) Growth: Is the process by which living things increases in weight, height or size.
(d) Reproduction: Is the process by which living things produce young ones of their own.
(e) Respiration: Is the process by which living things breathe or respire [carbon dioxide/oxygen] in order to obtain energy for their activities.
(f) Nutrition: Is the process by which living things obtain or make food or feed.
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B.Light energy is converted to chemical energy by plants during photosynthesis
C.Chemical energy is transformed to heat energy as organisms carry out respiration
D.Energy is stored by plants in bonds of organic compounds used as food
b.a higher surface area/volume ratio than the parent cell
c. more DNA in its nucleus than the parent cell
d.less DNA in its nucleus than the parent cell
The surface area to volume ratio will be higher as compared to the parent cell after cell division. Hence, option B is correct.
Further Explanation:
Cellular division is known to be the process through which the parental cell segregates into two or more daughter cells. This process generally occurs as a segment of a larger cell cycle. It comprises of 2 main stages, interphase and M-phase. Interphase is further segregated into:
M phase or mitotic phase is the next stage after interphase and is segregated into 4 phases:
During cellular division, the cell segregates into 2 daughtercells and as the cell becomes larger, the volume elevates rapidly as compared to its surface area. Hence, option B is correct. The reduction in the cell’s ration of the volume to surface area makes it difficult for the cell to transport the required substances in and move out the waste products quickly enough for the cell to survive.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Cell Division
Keywords:
Cell division, cellular division, interphase, cell cycle, metaphase, M phase, G1 phase, prophase, G2 phase, telophase, S phase, anaphase, surface area, volume, ratio.
OPTION A.
After cell division, each daughter cell has a higher surface area/volume ratio than the parent cell. This is due to the division resulting in two smaller cells with same DNA content. This increased ratio is beneficial for the exchange of material across cell membrane.
After cell division, each daughter cell has a higher surface area/volume ratio than the parent cell. When a cell divides, it splits into two smaller cells, reducing the volume but not reducing the surface area in the same proportion. This results in each daughter cell having a larger surface area relative to its volume. This increased ratio is important because it allows for more efficient exchange of nutrients and waste products across the cell membrane.
The amount of DNA in each daughter cell is the same as in the parent cell because during cell division, the DNA is copied and then distributed evenly between the two resulting cells. Therefore, option c and d are incorrect.
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RNA or Ribonucleic acid is a molecule similar to DNA. It is single-stranded, has nitrogenous base pairs, and a sugar molecule. The RNA can be categorized into mRNA, tRNA, and rRNA.
The correct sequence of nucleotides in the tRNA will be:
U - U - A
In the nucleotide sequencing, the nitrogenous compounds present in the RNA are adenine, guanine, cytosine, and uracil instead of thymine.
The mRNA is a single messenger molecule, which is made from the transcription of DNA molecule. The further process involves the translation in which ribosomes play a crucial role.
In translation, the polypeptide is synthesized by the information delivered by the mRNA. The information in the mRNA is read in the form of a group of three nucleotides, known as a codon.
The codon is then read by the corresponding anticodon region of the tRNA molecule. It makes the set of the anticodon, which is complementary to the codon.
For instance, the mRNA containing the base pairing of A-A-U, the complementary sequence made by tRNA will be U - U - A.
Therefore, the correct answer is U - U - A.
To know more about mRNA and tRNA, refer to the following link:
Answer:
U-U-A
Explanation:
A mRNA molecule is formed as a result of transcription, which then proceeds to the ribosomes in the cytoplasm to undergo translation. Translation is the process whereby an amino acid sequence (protein) is synthesized using the information in the mRNA molecule/sequence. The mRNA sequence is read in a group of three nucleotide bases called CODON. Each codon specifies an amino acid.
This codon is read by another RNA molecule in the ribosome called tRNA (transfer RNA). tRNA contains another set of three nucleotides called ANTICODON, which is complementary to the CODON and responsible for reading the codon in order to carry the corresponding amino acid to the growing sequence.
According to this question, a portion of a messenger RNA molecule contains the base sequence A-A-U, the complementary anticodon sequence of the tRNA would be U-U-A.
Answer: A) Chemical
Explanation:
Your body runs off of chemical reactions. Your stomach has a chemical compound to dissolve and distribute the energy to your body.
Molecular clocks use rates of mutation to measure evolutionary time. Mutations add up at a fairly constant rate in the DNA of species that evolved from a common ancestor. The more mutations that happened in each lineage, the greater is the differences between these lineages.