Nitrogenous base, sugar and phosphate
Flowering plants are the most successful land plants because theri seeds are protected in fruits
(Score for Question 2: ____ of 2 points)
2. Which offspring are the recombinant offspring in this cross?
Answer:
The recombinant offspring in this cross are Yybb and yyBb
(Score for Question 3: ___of 2 points)
3. How far apart are Y and B?
Answer:
Y and B are 16 map units apart
Answer:
B. Mutation; C. Random genetic drift; D. Migration; F. Natural selection
Explanation:
B. Mutation: Mutations resulting from substitution, addition or deletions of a nucleotide in a sequence can alter the gene. This can be carried over a population and may be have deleterious effects or increase fitness in a gene.
C. Random genetic drift: It is a change in allele frequency that occurs by chance, usually in a small population and is carried over generations.
D. Migration: Involves the flow of a gene in or out of a population, and this modifies the allele frequency.
F. Natural selection: When fitness-promoting alleles are favored and carried over to the next generation.
