Answer:
the awnser is germinating seeds.
i got this awnser correct on my test :)
Answer:
1. Merocrine
2. Holocrine
Explanation:
Merocrine glands are the exocrine glands that synthesize their secretions on ribosomes attached to rough ER. These secretions are packaged by the Golgi complex into the secretory vesicles and are released from the cell via exocytosis. Tear glands, salivary glands are some examples of merocrine glands.
The cells of holocrine glands do not have vesicles but accumulate a secretory product in their cytosol. The mature secretory cells rupture to release the secretory product. This results in the presence of large amounts of lipids from the plasma membrane and intracellular membranes in secretions of these glands. One example of a holocrine gland is an oil-producing gland of the skin.
Answer:
a. Naked dna
f. nucleosome
e. solenoid
g. loop domain
d. chromatid
c. chromosomes
b. metaphase
Explanation:
The naked DNA consists of the DNA molecule not associated with proteins.
A nucleosome is an octamer of histone proteins (i.e., dimers of H2A, H2B, H3, H4) associated with DNA.
A solenoid is a chromatin fiber consisting of 30 nanometers (nm), it represents the secondary structure of the chromatin.
The chromatin fibers are organized into loops (300 nm) that represent the tertiary structure of the chromatin. These loops enable to package chromosome segments consisting of about 100 kilobases (kb).
The sister chromatids are two identical DNA-based structures that remain joined together by the centromere to form a single chromosome (700 nm).
Answer:
Selection against dominant alleles is more efficient than selection against recessive alleles.
Explanation:
Explanation:
In biotechnology, several tools have been created to solve practical issues faced within society- one such tool is genetic engineering. Genetically modified organisms (GMs) with their DNA changed or transformed through genetic engineering methods usually GMOs include modifications in DNA through the incorporation of genes from all creatures such as plants, fungi, viruses and livestock.
These are referred to as transgenic organisms, which contribute to several innovations by increasing the nutritional value of foods and improving global food security which is the availability of food for the entire population.
- GM crops are believed to be more robust in nutritional value and taste, and may be altered to boost the nutritional profile. For example, Golden Rice,a modified staple, is thought to be the solution to preventable cases of blindness caused by vitamin A deficiency. This variety has been altered to biosynthesise β-carotene, a vitamin A precursor.
- Pest infestation leads to significant crop loss every year. These GM crops can increase food security. They are immune to pests and should decrease the use of herbicides and pesticides, thereby growing crop yields and making output more effective.
One of the first GM tomatoes dubbed the Flavr Savr was made for longer shelf life. A gene has been introduced from a different species to slow down the tomato's ripening without altering its taste or nutritional content, as well as reducing its vulnerability to fungal infection.
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