The best way of solving this is to draw a Punnett square.
You know the F0 had one parent with singed bristles (s), and normal wings (L), and the other parent is normal bristles (S) with vestigial wings (l).
If you do the cross ssLL x SSll you'll find 100% of the offspring is F1: SsLl, this means, all of them show the dominant traits: normal wings and normal bristles.
If you cross two parents from F1 to have F2, you'll find:
SsLl x SsLl = SSLL + SslL + sSlL+ ssll = 25% SSLL,all dominant traits. 50% SsLl is a recessive trait carrier but shows dominant traits. 25% ssll this one has all recessive alleles, which means, it will show vestigial wings and signed bristles.
Answer:
A heterogeneous mixture of water, carbon dioxide, oxygen, glucose molecules
At a molecular level, looking at a tree involves observing atoms and molecules that combine to form more complex structures such as cells, tissues, and organs. These microscopic structures support the tree's growth, function, and ability to adapt to its environment. Thus, a tree represents various levels of biological organization.
Molecularly speaking, when you look at a tree you're witnessing an array of complex structures that form the basis for life. This includes atoms, the smallest and most fundamental units of matter that form molecules. Many biologically important molecules in the tree are macromolecules, large molecules formed by polymerization where smaller units called monomers combine. These molecules are significant components of the tree's cells which are the fundamental building units of life.
Additionally, what you're also seeing are elements of the tree's structure including tissues and organs that are formed by these cells. For instance, the tree's leaves contain specialized cells like guard cells which help regulate gas exchange. On a larger scale, these molecules and cells also contribute to the overall health, function, and resilience of the tree in its ecosystem.
Therefore, when you look at a tree, you're essentially witnessing numerous levels of biological organization. These range from the level of molecules and cells up through tissues and organs, to the entire tree or organism itself. This allows the tree to grow, function, and adapt to its environment.
#SPJ2
Answer:
25
Explanation:
Mutations give rise to variability
Giraffes' necks got longer over time
Traits can be passed from parent to offspring
Accumulated changes in an individual are passed on to its offspring
All species evolve over time
Accumulated changes in an individual are passed on to its offspring is the argument of Lamarck's theory of evolution which was incorrect and is option D.
Wisemen discarded the above-mentioned statement and gave the concept of germ cells and somatic cells. Also, he conducted an experiment in which he removed the tails of rats for 22 continuous generations, but it was noticed that the rats of the 23rd generation were still born with a tail.
This proved that the changes were occurring in somatic cells which are not responsible for changes in the offspring. The actual changes in the offspring are due to mutations occurring in the germ cells, so Lamarck's theory was discarded.
To learn more about Lamarck's Theory:
Answer:
DNA, RNA, ATP, and the phospholipids that form all cell membranes
Explanation: