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Where do you get chromosomes from?
The chromosomes in a karyotype are from a sample of body cells.
How many cells form at the end of human meiosis and how many chromosomes do they each contain?
At the end of meiosis II, four haploid cells form. Haploid means they have only one set of chromosomes. For humans, that would be 23 chromosomes.
Where does a human's genes come from?
A person inherits two sets of chromosomes: one from the mother, one from the father.
Why do you have birthmarks?
Birthmarks come from a mutation in your chromosomes in your body. No, it doesnt mean your a mutant or alien... It just means one of your chromosomes grew too fast.
What is the relationship between chromosomes and chromatids?
Chromosomes are the condensed and replicated form of DNA. The two identical halves of the chromosomes are known as sister chromatids. Before division, while the chromatids are still attached, they form one chromosome. However, when anaphase (i.e the stage when chromosomes split) starts and they are separated, the two chromatids on the opposite poles of the cell become complete chromosomes.
What is the purpose of meiosis in animals?
Meiosis in animals is a type of cell division necessary for sexual reproduction. During meiosis, the chromosomes are halved so that during sexual reproduction two halves from two parents can come together and form one cell, genetically combining their different chromosomes.
Why must a gamete have only one half the number of chromosomes in body cells?
A gamete will only have one half of the number of chromosomes found in body cells because two gametes have to come together. This means that the two gametes have to have only half of the chromosomes.
Explain why the majority of genes in an organism occur in pairs.?
Genes come in pairs because Genes are in chromosomes and chromosomes come in pairs as well.
Are prokaryotic chromosomes linear or circular?
Yes and no. Where Eukaryotes (like people, plants, fungi and ect) have multiple linear chromosomes Bacteria have one circular chromosome.Yes Bacteria have one chromosomeNo Bacteria don't have chromosomes
Is homologous chromosomes only present in cells that undergo meiosis?
Usually they dont as homologous chromosomes form bivalents with other homologous chromosomes and crossing over occurs between the 2. But if a chiasmata does form between the t homologous chromosomes they can change information.
Why did Walter sutton test on grasshoppers?
Walter Sutton used grasshoppers to test chromosomes and hereditary. He discovered that chromosomes come in pairs, one set from the mother and one from the father, and that these pairs split up during meiosis.
Why do potatoes have more chromosomes than humans?
The number of chromosomes of a species has little to do with the complexity of the organism or the amount of DNA. The reason for this is, chromosomes are known to break and form two or more new chromosomes, or fuse into one. The chromosomes of the potato and the potato lineage may have undergone many such changes, and the human lineage may have undergone a different series, resulting in the potato having more chromosomes.
