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what are chromosomes that carry the same kind of genes? |
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homologous chromosomes |
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offspring that are different from both parents are produced by |
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sexual reproduction |
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what are homologous chromosomes? |
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chromosomes tht carry the same set of genes |
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what carries the genes that determie sex |
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sex chromosomes |
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what is it called when cells are copied with half he number of chromosomes? |
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meiosis |
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how are sex cells different from other body cells? |
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sex cells have half as many chromosomes |
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people often go to genetic counselors to have a ___________ drawn to trace a disease that they do not want to pass on to their children |
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pedigree |
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Only one parent cell is needed in ___________ reporduction |
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asexual |
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t or f
every one of the chomosomes is different between men and women |
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f |
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t or f
Men and women each have different numbers of chromosomes in their sex cells |
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f |
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t or f
If you looked inside a cell during mitosis and you could see the chromosomes lining up, you could tell whether the cell belonged to a man or a women. |
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t |
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In humans, what are the sex chromosomes of females? |
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xx |
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In humans, what are the sex chromosomes of males? |
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xy |
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explain the difference betwwen meiosis and mitosis |
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division of the nucleus in a body cell in mitosis and produces sex cells in meiosis |
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Since sex cells only have half the chromosome cells that are found in a refular cell, how do they grow into cells that have a full sent of chromosomes? |
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the sperm has 23 chromosomes and the egg has 23 chromosomes and when they come together they make 46 chromosomes. |
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how is a new cell at the end of meiosis different from the parent cell at the start of meosis? |
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It has 1/2 the number of chromosomes
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air pocket between the inner and outer membranes: located at wide end of egg |
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air cell |
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egg white:cushions the embryo and provides water and protein |
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albumen |
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hard shell; protects the eggs contents, lets oxygen and carbon dioxide pass in and out of the egg |
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eggshell |
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developing chick inside an egg |
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embryo |
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membrane between the outer shell membrane and the albumen |
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inner shell membrane |
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membrane between the eggshell and the inner shell membrane |
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outer shell membrane |
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food source for the developing chick; attached to the middle of the embryo's gut |
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yolk |
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small dot where fertilization occurs |
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germinal disc |
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membrane that surrounds the yolk |
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yolk (vitelline) membrane |
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