20. Many years 90, scientists working with cells developed what is now known as the

Biology

1 answer:

serious [3.7K]3 years ago

8 0

Answer:

By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells

You might be interested in

How do geological changes affect evolution?

IRINA_888 [86]

Tectonic plate movements, volcanic eruptions, earthquakes, and climate change have shifted wildlife habitats, wiped out large numbers of species, and created opportunities for the evolution of new species. Hope this helped!

5 0

3 years ago

Start with the P generation with the following genotypes (AA x aa). Based on classical Mendelian inheritance, how will a cross b

vampirchik [111]

Answer: The genotype of the generation resulting from the given P ( parental generation) is Aa that is all offsprings in the first generation will be heterozygous dominant.

The genotype of the parents is AA and aa and the gametes produced by these parents are A and a respectively.

When these gametes fuse, they result in the offsprings with genotype Aa. This represents a dominant phenotype due to the presence of dominant gene ( a gene that masks the expression of recessive gene and expresses itself), which is A in this case.