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Biology genetics - need homework help please?

Biology genetics - need homework help please? Topic: Synthesis mean in biology
May 25, 2019 / By Kieron
Question: 1) How is it possible for a married couple with normal color vision to have a color-blind son? What type of disorder is this? What are the chances of another son being color-blind? What is the chance of a color-blind daughter? 2) How does cross-over during meiosis help construct a chromosome map? 3) What is the offspring result in chromosome number when nondisjunction occurs during meiosis I? during meiosis II? 4) Describe the synthesis process of the leading strand and the lagging strand of DNA, including the purpose of helicase, primase, DNA polymerase and ligase. Any help is very appreciated, even if it's just an answer to 1 question. Thank you very much!
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Best Answers: Biology genetics - need homework help please?

Huffie Huffie | 8 days ago
1. the mother must be a carrier. color-blindness is a sex-linked trait. every son born will have a 50% chance of being color-blind. there is no chance to have a color-blind daughter (the father is not color-blind). 3. i think it depends on how many chromosomes you start with. nondisjunciton just means the wrong number of chromosomes go to the wrong cell (instead of evenly separating). so, you could end up with a cell with extra or fewer chromosomes in either case (m I or m II). however, if too many chromosomes (or the "right" ones) are nondisjuncted, the offspring will probably self abort as it won't be able to form properly.
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Huffie Originally Answered: Biology hw help:genetics?
it is more common in meiosis when the homologous chromosomes fail to separate in anaphase 1.this is a chromosomal mutation (aneuploidy). - naturally is when cell division (cytokinesis) doesnt take place in mitosis and this gives rise to a tetraploid and therefore this cell would give rise to daughter cells which are also tetraploids. -artificially is by the drug colchicine which inhibits the formation of spindle fibres and hence the failure of the chromatids to separate in anaphase
Huffie Originally Answered: Biology hw help:genetics?
1. diploidy they have double the number of chromosomes 2. ovoid cells fail to divide (diploid is polyploid) b. 2 sperm fertilize a single egg c.somewhere in blastoid phase cells fail to split after mitosis.
Huffie Originally Answered: Biology hw help:genetics?
i'm going to help with some, yet seem interior the e book for something your self. a million] Autotrophs make their very own food, heterotrophs receive their capability via eating different organisms. 3]Amino 8]Hydrogen 11]Fruit 5]Starch, glucose. you are able to seem for the solutions online even. 4]Polysacharrides- complicated carbohydrates, polymers, made out of many glucose molecules joined mutually. Monosacharrides- carbohydrates that contain in straightforward terms one sugar molecule. 18]Diastole is the quantity of time whilst the middle relaxes after contraction. Ventricular diastole is whilst the ventricles are relaxing, on a similar time as atrial diastole is whilst the atria are relaxing. Systole is the contraction of the chambers of the middle, employing blood out of the chambers.

Eric Eric
The intercourse of a toddler is desperate by using the two intercourse chromosomes inherited from the mothers and fathers. a toddler will regularly inherit one intercourse chromosome from the mummy, and one from the daddy. a woman has 2 X chromosomes, so she can grant the two of her X chromosomes. the daddy can grant the two his X or Y chromosome. because of the fact the egg already is composed of an X chromosome (from the mummy), the gender of a toddler is desperate by using the X or Y intercourse chromosome of the sperm cellular from the daddy (for that reason including one extra element of the "blame it on the husband" record if issues do no longer bypass as planned). a woman toddler will result if the main suitable association is XX, and a boy will result whether it is XY. As you could anticipate, a pair of million/2 of the sperm cells incorporate an X chromosome, and a million/2 incorporate a Y chromosome. it is attainable to have a standard style of intercourse chromosomes, whether, it fairly is amazingly uncommon.
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Eric Originally Answered: Science genetics homework help?
Hey Alex, simple..! "Male animal has 30 chromosomes in each of his body cells" Here body cells are DIPLOID cells which means that they have double the number the chromosomes than normal type (HAPLOID cells). SPERM CELLS are always haploid cells which means they have half the number of chromosomes than BODY CELLS. Now our final answer is 15 chromosomes in each SPERM CELLS. Another short form for HAPLOID and DIPLOID are HAPLOID (n) DIPLOID (2n) Good luck Alex
Eric Originally Answered: Science genetics homework help?
In a normal animal cell, chromosomes are paired - half come from the father (sperm) half from the mother (egg). Sperm and egg cells are 'haploid' - they only have half as many chromosomes as the rest of the normal cells in the animal. If your animal has 30 chromosomes, that would be 15 pairs. If the animal is male, then it's sperm would have 15 chromosomes. Hope this helps.

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