Answer:
The dihybrid ratio we expect in the offspring is 9:7.
Explanation:
This is an example of complementary gene interaction, which is the non allelic interaction or genes, where the prominent genes at heterozygous loci may complement each other by complementing recessive alleles at the respective loci.
So in this case of complementary gene interaction, the individuals that are A-bb or aaB- or aabb will have the same set of observable features (phenotype) but only A-B- individuals will how the dominant phenotype.
This is called 'controlled' or 'prescribed' burning. Usually fires in the environment are regarded as undesirable and dangerous, but fires actually fulfil an important ecological role, and animals and plants had adapted to a certain frequency and intensity of fires. The seeds of some trees or grasses germinate after forest or grass fires, as the more open conditions after a fire allows the seedlings to compete and avoid being shaded and smothered by more established trees. Unfortunately, farming and forestry practices have in many cases resulted in a reduction of fires. A reduction in the frequency of fires also allows the build up of dead wood, and when a wild fire does occur, the amount of available fuel results in very hot, large and damaging fires. Therefore, management of forests and other environments such as prairies often use controlled burns to avoid the buildup of dead organic mass and to replicate the natural fire cycle.
1. P (because the tick is benefited but the dog isn't.)
2. M (because both organisms are benefited.)
3. P (the tapeworm is benefited but the student isn't.)
4. C (because the bird's nest is benefited and the tree is not harmed)
5. C (the hermit crab needs the sea anemones and the sea anemones is not harmed)
But yeah I gave you a few examples of (P, M, and C), so you should figure it out now.
6. C
7. P
8. M
Answer:
The correct answer is 3 countering the affect of declining CO2 on photosynthesis.
Explanation:
Carbon di oxide is an important reactant of photosynthesis.The atmospheric CO2 label regulates the rate of photosynthesis.
When the label of atmospheric CO2 decrease the photosynthesis rate also declines.
So to countering the effect of declining CO2 on phosynthesis plants increase the number of stomata in their leaves.
Answer:
46
Explanation:
a zygote is formed from fertilization where the sperm (23 chromosomes) intersects the ovum (23 chromosomes)
