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djverab [1.8K]
3 years ago
11

Plz answer this true or false??

Biology
2 answers:
erastovalidia [21]3 years ago
8 0

Answer:

false

Explanation:

you should always be able to test the hypothesis and try to make it correct

zaharov [31]3 years ago
7 0
The answer is true. An hypothesis is always an educated guess before starting a lab
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What is the source of the genetic information that determines the traits of a Pacific tree frog?
Tema [17]
The answer to the question above is letter D. <span>Chromosomes found in the cell nucleus.</span>
In the cell nucleus, DNA is tightly packed into the thread-like structure known as chromosomes. Every chromosome is made up of tightly coiled DNA around proteins (histones) that support its structure. Chromosomes are not visible when there is no cell division. It cannot be seen in the cell’s nucleus nor under the finest microscope. They are only visible when the cell is dividing and is apparently visible under a microscope.


5 0
3 years ago
Problem #1
Arisa [49]

Answer:

9/16  Kinked tail, normal growth

3/16 Kinked tail, obese growth

3/16 normal tail, normal growth

1/16 normal tail, obese growth

Explanation:

Kinked tail (K) is dominant over normal tail (k) and normal growth (N) is dominant over obese growth (n). Two mice that are heterozygous for both traits (KkNn) are crossed:

        KkNn    x    KkNn

offspring:

<em>9/16</em><em> K_N_ - Kinked tail, normal growth</em>

<em>3/16</em><em> K_nn - Kinked tail, obese growth</em>

<em>3/16</em><em> kkN_ - normal tail, normal growth</em>

<em>1/16</em><em> kknn - normal tail, obese growth</em>

(See the attached image for the Punnet's square analysis)

3 0
3 years ago
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
The number of bones in the appendicular skeleton is
VMariaS [17]

Answer:

E... 126

Explanation:

The appendicular skeleton includes all bones of the upper and lower limbs, plus the bones that attach each limb to the axial skeleton. There are 126 bones in the appendicular skeleton of an adult

5 0
3 years ago
Tau is a microtubule-associated protein that plays a key role in the development of certain brain disorders. To analyze Tau expr
telo118 [61]

Answer:

1. transcription of Tau DNA in different directions.

4. different chemical modifications of Tau protein.

Explanation:

Tau gene transcribe in different direction which depends upon the animal age. This happens because at different age and developmental stage, animal produce different RNA binding proteins which leads to formation of alternative splice forms. This reaction is strengthen by the addition of phosphate and sugar molecules which again depending on developmental stage and time.

8 0
3 years ago
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