Complete question:
Prophase of meiosis I has some important differences from prophase of mitosis. These differences include: ___________BLANK pair, and _________BLANK occurs.
A: chromatids; condensation
B.,chromosomes; separation
C. homologous chromosomes; crossing over
D. homologous chromatids; separation
Answer:
C. homologous chromosomes; crossing over
Explanation:
Prophase I of meiosis and prophase of mitosis are quite distinct with respect to the events occurring in the cells. Prophase-I of meiosis is a relatively long stage. The Zygotene stage of prophase-I includes the pairing of homologous chromosomes. This pairing is mediated by synaptonemal complex and the process is called synapsis. The paired chromosomes undergo the process of crossing over during the pachytene stage of prophase-I. In crossing over, the non-sister chromatids of the bivalents exchange some genetic material between them. The events of synapsis and crossing over do not occur during prophase of mitosis.
A leaf is xylem the of function the is what
Precipitation is the answer :)
The Cenozioc era is referred to as the age of mammals.
Gene interaction is the determination of a single trait or phenotype by genes at more than one locus; the effect of one gene on a particular trait depends on the effects of a different gene located else where in the genome. One type of gene is epistasis. One of the difference between the epistatic gene and hypostatic gene is that the alleles at the epistatic gene mask or repress the effects of alleles at another gene. Hypostatic gene on the other hand is the whose alleles are masked or repressed.