7. DNA sequences are often used to determine relationships between organisms. DNA sequences that code for a particular gene can vary, though organisms that are closely related will have very
similar sequences. This table shows the amino acid sequences of 4 organisms.
Human: CCA TAG САС CTA Chimpanzee: CCA TAA CAC СТА
Pig: ССА TGT AAA CGA Cricket: CCT AAA GGG ACG

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation