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IgorLugansk [536]
3 years ago
7

A particular genetic cross in which the individual with a dominant phenotype and an unknown genotype is crossed with an individu

al known to be homozygous for a recessive trait is referred to as
Biology
1 answer:
Vladimir [108]3 years ago
6 0
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What are the 3 difference between DNA and RNA
MrMuchimi

Answer:

DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. DNA is a double-stranded molecule, while RNA is a single-stranded molecule. DNA is stable under alkaline conditions, while RNA is not stable. DNA and RNA perform different functions in humans.

8 0
3 years ago
Read 2 more answers
Difference between morphological and physiological variation
tatyana61 [14]
Hey there!

This is in contrast to physiology<span>, which deals primarily with function. </span>Morphology<span> is a branch of life science dealing with the study of gross structure of an organism or taxon and its component parts.</span>
4 0
3 years ago
Researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. The robo
Naily [24]

Answer:

d. tissue

Explanation:

There are several levels of organization of life which starts from the functional unit of life called cell.Cells are made of a combination of macromolecules that consist of atoms. Several cells associate together to perform one or more specific functions at the tissue level. The tissue level is made up of similar cells that carry out similar task or functions. The robot’s cardiac cells that work together in synchrony could be considered at the tissue level.

8 0
3 years ago
What is the relationship among chromosomes, Gene's and dna
GarryVolchara [31]

DNA, which is a sequence of nucleotides, make up genes. Genes are DNA sequences that  code of a functional protein and are controlled by a promoter region on the DNA. DNA, including genes within it, are supercoiled into chromosomes so they are able to fit in the cell. Otherwise, uncoiled DNA in a cell is much longer than the cell itself.  

6 0
3 years ago
Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell memb
aniked [119]

Answer:

B (active transport using ATP)

Explanation:

Movement of substances normally occur in the direction of concentration gradient/difference i.e. the difference in concentration of a substance across a membrane. Letting molecules diffuse or pass down their concentration gradient does not require energy but pumping those molecules against gradient requires energy in form of Adenosine triphosphate (ATP). This process is called Active transport.

In order to perform certain cellular processes, cells need to move substances from their surroundings into the cell across their cell membrane. Moving this substances against the concentration gradient between the cell membrane and its extracellular fluid requires energy (ATP).

An example is the sodium-pottasium pump employed by animal cells in which they expend energy to move K+ molecules into the cell and Na+ molecules outside the cell against the concentration gradient of their cell membrane and extracellular solution.

5 0
3 years ago
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