Answer:
We would expect 63 snails to be homozygous recessive for both traits.
Explanation:
Dihybrid cross
This is a cross between two distinct groups with different observed traits. Independent segregation is observed on the allelic pair for the genes in the separate chromosomes.
The first filial generation produces 4 similar offspring, the second filial generation, would demonstrates a phenotypic ratio of 9:3:3:1.
On dividing the 1,000 progeny on the aspect of phenotypic ratio 9:3:3:1, we can infer an approximate number of 63 (62.5) snails to be homozygous recessive for both traits.
We will calculate on the aspect of the phenotypic ratios and proportions,
Therefore
9+3+3+1 = 16.
1,000*1/16 = 62.5
62.5 can be approximated to 63
Answer:
Semi-conservative
Explanation:
The semi-conservative DNA replication model was initially hypothesized by Watson and Crick, but was later proven by the Meselson-Stahl experiment, in which DNA samples were tagged, and after replication, it was observed that the two resulting DNA both had one strand each from the parent DNA strand.
This dispelled the conservative model which proposed that the two strands of the daughter DNA are newly synthesized, while the parent DNA only served as a template.
The correct answer is semi-conservative.
Answer:
Transfer RNA
Explanation:
The transfer RNA is the smallest of the RNA molecules, its main function is to transport the aminoacids in the protein synthesis. They carry the aminoacids that are added to the growing polypeptide chain.
Tidal forces from Earth have slowed down the moon's rotation
Because that was the time when nazi powers were rising in power. At the time he was only there as a traveler but then he thought it would be better just to stay there. Hope this helped
