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son4ous [18]
3 years ago
9

What is the time between Sunset in darkness

Biology
1 answer:
allsm [11]3 years ago
6 0

Answer:

Twilight

Explanation:

It is a time when the light from the sky appears pinkish.

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Is it possible to have a knockout mutant plant that shows no visible phenotype that is different from the wild-type plant?
joja [24]

Answer:

Molecular genetic approaches to the study of plant metabolism can be traced back to the isolation of the first cDNA encoding a plant enzyme (Bedbrook et al., 1980), the use of the Agrobacterium Ti plasmid to introduce foreign DNA into plant cells (Hernalsteens et al., 1980) and the establishment of routine plant transformation systems (Bevan, 1984; Horsch et al., 1985). It became possible to express foreign genes in plants and potentially to overexpress plant genes using cDNAs linked to strong promoters, with the aim of modifying metabolism. However, the discovery of the antisense phenomenon of plant gene silencing (van der Krol et al., 1988; Smith et al., 1988), and subsequently co‐suppression (Napoli et al., 1990; van der Krol et al., 1990), provided the most powerful and widely‐used methods for investigating the roles of specific enzymes in metabolism and plant growth. The antisense or co‐supression of gene expression, collectively known as post‐transcriptional gene silencing (PTGS), has been particularly versatile and powerful in studies of plant metabolism. With such molecular tools in place, plant metabolism became accessible to investigation and manipulation through genetic modification and dramatic progress was made in subsequent years (Stitt and Sonnewald, 1995; Herbers and Sonnewald, 1996), particularly in studies of solanaceous species (Frommer and Sonnewald, 1995).

5 0
2 years ago
Which term best describes the change from more light colored moths to more dark colored moths
dem82 [27]
Natural selection....
8 0
3 years ago
What are chemical properties
Alekssandra [29.7K]

Answer:

C. Properties that can change the chemical nature of matter.

Explanation:

Chemical properties is a characteristic of a chemical substance observed when it undergoes a chemical reaction on seeing its precipitation. On knowing the chemical properties of a substance it aids in separation, purification and classification of a compound. some examples of chemical properties are as follows:

1. Toxicity

2. Inflammability

3. Reaction with other chemicals

4. Oxidation

7 0
3 years ago
6. An electron microscope would be best used for magnifying and viewing
weeeeeb [17]

Answer:

Specific cell structures

3 0
2 years ago
What is the probability that the offspring will be homozygous dominant? Use the Punett square below.
Alja [10]

Answer:

the correct answer is 25%

Explanation:

the whole amount of squares is 100%. to get a homozygous dominant you must have two capital letters. only one box has two capital letters so that makes 25%

3 0
3 years ago
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