Answer:
Genotype of the parental plant that produced round, yellow seeds is RRgg
Explanation:
Let us say that allele for round shape (R) is dominant over allele for wrinkled shape(r)
and allele for green color (G) is dominant over allele for yellow color of seed.
So a wrinkled green seed will have genotype either "rrGG" or "rrGg"
Like wise a round, yellow seeds will have genotype either "RRgg" or "Rrgg"
It is given that In the F1 generation, half of the plants produced round, yellow seeds and the other half produced round, green seeds.
So if a cross is carried between rrGg and RRgg, the following offspring will be produces
rG rG rg rg
Rg RrGg RrGg Rrgg Rrgg
Rg RrGg RrGg Rrgg Rrgg
Rg RrGg RrGg Rrgg Rrgg
Rg RrGg RrGg Rrgg Rrgg
So genotype “RrGg” gives round and green seeds
And genotype “Rrgg” gives round and green seed
Thus, genotype of the parental plant that produced round, yellow seeds is RRgg
Answer:
Date and latitude interact to determine photoperiod, the daily period of daylight. This interaction has important implications for latitudinal migrants for whom daylight may be a resource or for whom photoperiod regulates annual transitions in life‐history stages (i.e. birds).
Using an established formula, we developed user‐interactive, animated models that enable the visualization of how latitude and date determine photoperiod for latitudinal migrants. We also calculated the photoperiodic schedules for a broad range of hypothetical migratory programmes and real migratory programmes newly available through the proliferation of citizen‐science data. This enabled us to infer the limitations some migratory programmes place on mechanisms for photoperiodic regulation of annual breeding.
In the vast majority of cases, the act of migrating elevates annual daylight exposure. This raises the hypothesis that daylight availability selects for latitudinal migration, potentially contributing to its evolution in animals such as diurnal birds with limited time during the spring and summer to feed young. However, photoperiodic mechanisms regulating annual cycles could constrain the evolution of such migrations, depending on how they affect photoperiodic schedules. Most migratory programmes are consistent with known mechanisms of avian photoperiodism, but the range of feasible mechanisms declines for transequatorial migrants, which experience semi‐annual, 180°‐phase‐shifts in their photoperiodic cycles.
Understanding photoperiodic constraints on migration are particularly important in this age of changing latitudinal distributions and phenologies driven by climate change.
Hope this helps and have a great day!!! :D
Answer:
Formation of cuticles. (A P E X)
Explanation:
Hi lovely! Here are your scientific questions that are testable:
Does the type of liquid affect how fast an ice cube melts?
Does changing the temperature of water affect the buoyancy of an egg?
Does the thickness of the wire affect the power of the circuit?
Hope I helped!
