Sean and Catherine have 4 kids. Each kid has a different blood type. The public immediately assumes that Sean
couldn’t be the father. Is this necessarily true? Use
Punnett squares to show your work for if it is possible for
them to have these 4 kids together.
Pls, draw a Punnett square!!

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.

What enzyme is most important for dna replication and why?

Explain how scientists use geologic time to determine the age of landforms.