Answer:
Direct observation of evolutionary change: creation of drug-resistant bacteria.
Fossil record: discovery of transitional forms of animals, discovery of shells of extinct organisms
Homology: similarities in mammalian forelimbs, identical genetic code in fireflies and tobacco plants, vestigial pelvis in right whales
Biogeography: resemblance of endangered island species to neighboring mainland species,
Direct Observation of Evolution:
Direct observation of evolution involves studying the changes in a population over a relatively short period of time. One example of direct observation is the development of antibiotic resistance in bacteria.
Scientists have observed that certain strains of bacteria can evolve resistance to antibiotics through genetic mutations and natural selection. By exposing bacteria to antibiotics in laboratory experiments, researchers can directly observe the process of evolution as the bacteria adapt and survive in the presence of the drugs.
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Answer:
They have 1:4 chances of 0, 1:4 cahnces of AB, 1:4 chances of A, 1:4 chances of B
Explanation:
Blood has three types of alleles: A, B, 0 depending on the type of proteins in blood cells. They can have protein A, B, or not having them 0. The dominant allele will be B or A.
All types of blood are A, B, AB (co-dominance) and 0.
We all have two alleles for each gene, one comes from our mother, and one comes from our father.
If both parents are dominant, but they have a recessive child, you have both heterozygote genes to do the Punnett square.
Mother: I(A)i(0)
Father: I(B)i(0)
Irregular galaxy
A galaxy that has an unidentified shape is best classified as an irregular galaxy.
An irregular galaxy is a galaxy that has an undefined regular shape. These galaxies are composed of large amounts of young stars, gas, and dust. Irregular galaxies are usually small, disorderly in appearance, and without a nuclear bulge or any trace of spiral arm shape. Examples of irregular galaxies are the small and large magellanic clouds.
Answer:
The daughter cells are genetically identical to each other and the parent cell.
A. 19, granules
B. 36, triglycerides
C. 38, adipose tissue
D. none of these is correct
Answer:
C. 38, adipose tissue
Explanation:
Lipids/fats are one of the three energy storing biomolecules in living systems; the other two being carbohydrates and proteins. Three of them supply energy when oxidized but the amount of energy differs with lipids providing the most amount of energy.
Lipids provide 9 calories of energy per gram when oxidized, which is about 38Kj/g (where 4.2kJ = 1 calorie). Also, lipids or fats are stored throughout the body, specifically in connective tissues called ADIPOSE TISSUES.