Answer:
a)BB*Bb
b)0:2:2(short: intermediate:long)
c)0
Explanation:
A naturalist visiting an island in the middle of a large lake observes a species of small bird with three distinct types of beaks. Those with short, crushing beaks (BB) consume hard shelled nuts, those with long, delicate beaks (bb) pick the seeds from pine cones, and those with intermediate beaks (Bb), consume both types of seeds though they are not as good at either. Assume that this difference in beak morphology is the result of incomplete dominance in a single locus gene. Which of the mated pairs below will have the best adapted offspring in a year in which most of the food available is in the form of hard shelled nuts? What would be the phenotypic ratio of the F1 generation resulting from a cross of Bb x bb(Short:Intermediate:Long)? How many offspring of an intermediate x short beak cross will have long beaks (assume 4)?
A) since the feed is put into consideration, then the offspring that is best adapted to feed on hard shelled but is to be considered. Cross-linking a gene BB with Bb is the best. If BB is said to be dominant then the offspring are produced will be short beak and intermediate beak in the ratio of 2:2 where both are suitable for feeding on hard shelled but.
B) The phenotypic ratio of the F1 generation (first generation or offspring) between Bb and bb is that there won't be a pure short beak(BB). Therefore 0:2:2 for short: intermediate: long.
C) for the intermediate and short beak crosslinking there won't be a long beak in the first generation when we limit the number offspring to four.
The answer is definitely true
Answer:
Explanation:
irst of all we need to understand what are shared derived characteristics or synapomorphies. These are the characters which were evolved in the ancestors of special groups of organisms and after that they were transferred to the descendants (or lineages) of those groups as well.
These characters are very important in the grouping or organisms. Now coming towards the question, we see there is a cross between Fungi and Plantae.
The shared derived character that can be written here will be multicellular and eukaryotes.
These are the characters which were evolved in both fungi and protists from their immediate ancestors and are transfrred to their further lineages as well.
Answer:
Gene expression plays a critical role in the morphological changes that take place in a developing embryo and fetus and in differentiation of stem cells to form specialised cells