If we name the gene for freckles with F, then the genotypes for having freckles are Ff (heterozygous), FF (dominant homozygous) and for no freckles ff (recessive homozygous).
If we name the gene for nose shape with N, than the genotypes for broad noses are NN (dominant homozygous) and Nn (heterozygous) and for narrow noses nn (recessive homozygous). A cross between two heterozygous:
P: FfNn x FfNn
F1:
9/16 are with freckles and broad noses
3/16 are with freckles and narrow noses
3/16 are with no freckles and broad noses
1/16 are with no freckles and narrow noses.
<span>Sunlight emits light energy which is absorbed by the thylacoids in
the chloroplasts of a plant. Chloroplasts are organelles in a plant
cell whose funtion is photosynthesis (the use of light to make
energy). Thylacoids are a part of the chloroplast which absorbs
light. The thylaciods convert the light into energy molecules NADPH
and ATD. The Calvin cycle then takes place in the stroma
(gellatinous matrix of the chloroplast). The Calvin cycle is the
use of ATP and NADPH plus carbondioxide to produce starch. Starch
is the polysaccharide sugar formed from glucose synthesized in a
linear chain. The starch is the storage of the glucose which is
used as an energy source for the plant cells. </span>
Answer:
A. 50% Type A, 50% Type B
Explanation:
To answer this we can draw a punnett square.
Since o if recessive, it can only be expressed if it is not masked by a dominant allele. Therefore the male with type O blood has the genotype oo. A and B are co-dominant, so the woman has genotype AB.
_ | A | B
o |Ao | Bo
o | Ao | Bo
Since A and B are dominant alleles, they will mask the o allele. Therefore genotype Ao will be a Type A phenotype, and genotype Bo will be a Type B phenotype.
Therefore, the phenotypic probabilities for this cross is 50% Type A, 50% Type B. Hence, the answer is A.
Hope this helped!
One example: The improvement in science and technology over the years has decreased the infant mortality rate. Since more babies live, we have a higher population.
Also, with increases in science and technology, there are many diseases that were once considered fatal that are now easily treated. This has also led to a higher population.
Answer:
C. The phosphate portions attract water, and the lipid portions repel water
Explanation:
The phosphate parts are polar, meaning they're partially charged, so they attract water molecules, which also have partial charges. The lipids are non-polar, so they don't attract water molecules, meaning they can't dissolve in water.
