Answer:
Two recessive genes for attached earlobes
Explanation:
For a recessive trait to be displayed, it must mean that the individual does not possess a dominant allele that would be expressed instead of the recessive allele. Therefore, Ashley must have two copies of the recessive genes to have attached earlobes. Possessing one or two dominant genes for free earlobes would mean that she would have free earlobes.
This can also be visualised with a punnet square, see attached image. We know the parents carry a recessive allele but have free earlobes, so they must have the genotype Ff. The punnet square shows 3 genotypes are possible
FF, which would give free ear lobes
Ff, the same genotype as her parents, free earlobes
and ff, which would give attached earlobes.
There are 46 chromosomes, and in total of 23 pairs of chromosomes. karyotype is a human male that consists of 22 pairs of chromosome.
These chromosomes are autosomal chromosomes with one X and one Y chromosome.
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Answer:
1.The cell membranes main trait is its selective permeability, which means that it allows more substances to cross it easily, but not others. small molecules that are nonpolar (have no charge) can cross the membrane easily through diffusion but ions (charged molecules) and larger molecules typically cannot.
2. The structure is called a lipid bilayer because it is composed of two layers of fat cells organized in two sheets. the lipid bilayer is typically about five nanometers thick and surrounds all cells providing the cell membrane structure.
3. Osmosis.osmosis is the movement of water across a membrane from an area of low solute concentration to an area of high solute concentration.
4. Active transport. during active transport substances move against the concentration gradient, from an area of low concentration to an area of high concentration. this process is active because it requires the use of energy (usually in the form of ATP). it is the opposite of passive transport.
Explanation:
Hope this helped Mark BRAINLIEST!!!
You can eat starch, but you can't digest cellulose
It will occur where a river loses energy.
