H

80 70 60

40

25 10 5

- Electrode 6

D III

cl III III

Lane (D) of Known

fragment sizes.

Kilobase pairs

0

AI IVA

Wells

Agarose Gel

Chamber filled with

Unknown DNA size samples buffer solution

O A. A negative control

O B. A positive control

O C. A restriction enzyme

O D. A remote sensor

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary

Tom wants to conduct a scientific study but he needs to finish by the end of the school year. what practical way could tom work around this limitation and be successful in his study?