Answer:
the answer is B
Explanation:
because pangaea was a super continent
The correct option is D.
Transcription is the process by which the information in a DNA molecule is copied into an mRNA strand. Replication is the process by which two new strands of DNA are formed from a single parent DNA. Both the DNA and the RNA are composed of four different bases, three of the bases are the same while one is different for the DNA and RNA. It is only the RNA that has uracil while it is only the DNA that has thymine. Thus, Uracil is involved during the process of transcription since it is an mRNA strand that is formed while thymine is the one involved during the process of replication since it is a DNA molecule that is formed.<span />
I'm not sure but but i think the answer will be:
A. additive genetic variance times the selection differential.
Answer:
Pollination: a. pollen tubes grow down the style.
Fertilization: c. 2 sperm are discharged into the female gametophyte.
d. sperm fuse with the egg & 2 polar nuclei
Seed development: b. generative, cell divides, forming 2 sperm.
e. zygote forms & divides into a terminal cell & a basal cell
f. cells of the embryo differentiate into three tissue types
Explanation:
Fertilization is the fusion of one or more sperm with an egg or the female gametophyte in the case of vegetables as option C and D describes.
Pollination is the process that flower plants use to reproduce with the help of insects that transport pollen from one flower to other depositing it in the pollen tubes that grow down the style in order to connect with the ovary of the flower as option A describes.
As regards seed development once that the fertilization is finished the seed starts to grow as option E and F describes. Option B describes the development of sperms, this process occurs before fertilization and through mitosis and meiosis.
