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science heredity
| Question | Answer |
|---|---|
| what is heredity? | the passing of traits from parent to offspring |
| what is reproduction? | produce other offspring that are similar to the parents |
| how many parents are in asexual reproduction? | 1 parent |
| how many parents in sexual reproduction? | 2 parents |
| what are genes? | a section of DNA molocules that contains the information to see ones spacific protins also carries traits and is located on chromosomes |
| how many chrrosomes are in an egg and sperm cell? | 23 chromosomes |
| why dont you look exactily like your parents? | because the genes are carried from parents to their offspring on chromosomes and sence you have a combination of both your parents genes you would have a combination of both of them |
| can identical twins be differint sexes?why? | no they cant be differint sexes because identical twins develope from teh same egg ferternal twins do not |
| how many chromosomes are in the skin cells off your body? | 46 chromosomes |
| girls have an XX chromosome. what do boys have? | XY |
| what did gregor mendel descover? | heredity or genetics |
| what is a dominant allele? | an allele is one whose trait always shows up in the organism when the allele is present |
| a plant for instance that carries both a dominamt allele and recieved allelefor a certen trait is called. | a hybrid |
| if oneallele is masked by the other allele in the pair the masked allele is called. | a recieved allele |
| what is a trait? | a charasteristic that an organism can pass on to the offspring through the genes |
| your body weigth and your skin color are two traits thats are? | inherited adn enviorment |
| what is meant by purbred? | the two alleles are the same two dominant two recessive |
| explain the punett square? | a chart that shows all the possible combinations of alleles that can result fom a gentic cross |
| qhat is a phenotype? | an organismes physical appearence or visible traits |
| what is a genotype? | an organisms genetic makeup or allele combinations |
| what are chromosomes? | theory of inheritence |
| what is DNA? | the gentic material that carries information about an organism and is passed fromparents to offspring |
| when sex cells combine to produce offspring what will each sex cell contribute? | 23 of half of the chromosomes |
| what is a major differince between sexual and asexual contribute? | sexual is with 2 parents and asexual si with 1 parent |
| what is the process when a cell makes an exact copy of its self? | mitosis |
| what is the process when it reduces its numbers to make a sex cell? | meosis |
| in punitt square B represents brown eyes and b represents blue eyes. how many of the four will have brown eyes? | 100% or 4 out of 4 |
| where are the human eggs produced? | ovaries |
| where is the sperm produced? | testes |
| list the levels of cell organization. | cell_ tissue_organ system_organism |
| what is the joining of the sperm and egg called? | ferdalization |
Created by:
caroline boudreaux
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