Which of the following could be unicellular? a) Prokaryotes. b) Eukaryotes. c) Either prokaryotes or eukaryotes. d) Neither prokaryotes nor eukaryotes. Cell Division: The cell division is that process in which one parent cel...
The short answer to your second question is no, transcription generally does not happen at the same time as DNA replication. In eukaryotic cells, DNA replication occurs during the S-phase of the cell cycle. During S-phase, RNA transcription and protein translation are largely limited to the ...
Which of the following options is correct? The special type of cell division required to produce gametes is called a. mitosis. b. meiosis. c. maturation. d. capacitation. e. fertilization. Two individuals of the genotypes GG...
8. An oocyte is a cell which undergoes meiosis to produce an ovum or egg. 9. A catalyst is a substance that can speed up the rate of a chemical reaction without changing its own structure. 10. A black hole is a celestial body which has approximately the same mass as the sun and a...
Mating between AA and aa would produce both diploid (Aa) and tetraploid (AAaa) F1 pro- genies. It is expected the F1 (Aa) is again capable of producing 2n pollen (or eggs) by FDR or SDR during meiosis. We shall consider the case of FDR. The principle of using SDR diploids is ...
Mitosis Versus Meiosis Two types of cell division are mitosis and meiosis. In meiosis, a cell splits to form new cells with half the number of chromosomes of the original cell, and produce gametes for sexual reproduction. In mitosis, a cell splits to form two daughter cells, which are gen...
Opportunities for crossing over between X and Y certainly occur normally but there is still doubt as to which arm of the Y is involved. More important, there is suggestive evidence that meiosis breaks down when the sex chromosomes fail to associate and there may thus be a mechanism for the ...
“Novel hybrid strains ofAgaricus bisporus,the germination of the spores of which provides mostly homocaryons, their production and their use”. Hybrid strain of Agaricus having the following traits: it is interfertile withAgaricus bisporus,
INTRODUCTION The view of cholesterol as a nasty substance which clogs arteries and causes heart disease is wide-spread, but it does not do the molecule justice. Not only is it a vital component of cell membranes without which the cell cannot function, but it is also the precursor to all st...
Ashman et al., “Strain dependence of antibody-mediated protection in murine systemic candidiasis.” J. Inf. Dis. 168: 511-513; 1993. Balish et al., “Serum antibody response to gnotobiotic athymic and euthymic mice following alimentary tract colonization and infection with Candida albicans.” ...