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What kind of gametes can be made of AABbCCDd?
Each gamete contains one allele from each of the genes (in this case one version of each letter). Any gene for which the individual is homozygous (has two of the same alleles) can only produce gametes with that allele. So in this case the organism has BB and dd - so will always have a B and d in the gamete. So the possible gametes are: ABCdE ABcdE ABCde ABcde aBCdE aBcdE aBcde aBCde
How does the fertilization affect the menstrual cycle?
Fertilization would be when conception occurs, if the fertilized egg implants itself in the uterus lining this is when pregnancy occurs and thus the menstrual cycles stop. Although fertilization doesn't always result in pregnancy, and pregnancy can miscarry at any point.
What does evolution not involve?
Evolution does not involve individuals changing to better adapt to their environment during their lifetime (Lamarckism). It also does not involve a predetermined or goal-directed process. Furthermore, it does not always result in the creation of "perfect" or "advanced" organisms.
What type of life cycle exists in which the haploid form?
The gametic life cycle exists in which the haploid form is always unicellular as in humans.
Why is it important that gametes contain only half of the number of chromosomes present in body cells?
Body cells have the full number of chromosomes because they reproduce by binary fission. They grow, then divide into two halves. Each of these must have the same number of chromosomes as the original. Gametes however, sperm and eggs have one half becsaue upon fertilization they combine to form the full amount of chromosomes. If they both had the full amount the fertilization would result in double the amount of chromosomes necessary
Why fertilisation does not follow pollination?
Fertilization does not always follow pollination because pollination is the transfer of pollen from a male reproductive organ to a female reproductive organ, while fertilization is the fusion of male and female gametes to form a zygote. Pollination can occur without successful fertilization due to various barriers or obstacles, such as incompatibility between the pollen and stigma, lack of viable pollen, or unfavorable environmental conditions.
Does a change in position always involve a force?
Yes, a change in position always involve force.
Does sperm always reach the egg during fertilization?
No, sperm does not always reach the egg during fertilization. Only one sperm typically fertilizes the egg, while the rest are blocked from entering.
What do quantitative observations always involve?
Quantitative observations involve quantinty or numbers .
Gang-related homicides most always involve?
Gang related homicides always involve ruined, thrown away lives.
Gang-related homicides almost always involve?
Gang related homicides always involve ruined, thrown away lives.
What are the different types of sex cells?
The human gametes are the sperm cell (male) and the egg cell (female). The chromosomes carried by the sperm cell can have two forms, the X cell (female offspring) or the Y cell (male offspring). These combine with the egg cell, which virtually always carries only an X chromosome. So an XX cell would develop as a female, and an XY cell would result in a male offspring.
What type of chemical reaction classes always involve oxidation?
The combination of two elements (a metal and a nonmetal) is always a redox reaction.
Why genetic variation is still possible if self pollination occurs?
This is because during meiosis there is (mostly) genetic variation by means of crossing over, independent assortment and mutations. As two gametes are being fused, the end product will be different from the parent, because the factors mentioned above ensure this. For a bit more info: The end product might not always be different as sometimes (in a very rare case), independent assortment and mutations might not occur to the two gametes which are to be fertilised, and if the two gametes both contained chromosomes on which crossing over did not occur, and if these two gametes were to fertilise, then the product would be genetically the same as the parent plant.
Do chemical reactions always involve changes in energy?
no
What is the purpose of gametes in the sexual production?
The gametes are the sex organs in sexual reproduction. The female gametes are known as eggs or ova and the male gametes are known as sperm. The gametes carry the genetic information need to form a fertilised egg. When the sperm fuses with the egg they form an ovum which develops into a foetus.
Gang related homicides almost always involve what?
Gang related homicides always involve ruined, thrown away lives. See related question below.
