4038644
Description
Flashcards by Scotty Watson, updated more than 1 year ago
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Created by Scotty Watson
about 9 years ago
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| Question | Answer |
| In humans, a typical body cell is called a(n) __________. | somatic cell |
| In humans, a typical body cell, called a somatic cell, has _____ chromosomes. | 46 |
| If we use a microscope to examine human chromosomes in metaphase of mitosis, we see that each of the chromosomes consists of __________. | 2 sister chromatids |
| How many duplicated chromosomes does a human cell contain at metaphase? | 23 |
| Almost every chromosome has a twin that resembles it in ______. | length centromere position staining pattern |
| Two matching pairs of chromosomes are called __________. | homologous chromosomes |
| Two chromosomes of such a matching pair are said to be homologous chromosomes. Why? | because each chromosome carries genes controlling the same inherited characteristics |
| What is the location of a particular gene within a chromosome known as? | locus |
| X and Y chromosomes are also known as | sex chromosomes |
| Define autosomes ? | the name given to all the chromosomes except to the sex chromosomes (X and Y) |
| Are all of your chromosomes fully homologous ? | females - yes males - no |
| What is a key factor in the life cycle of all species that reproduce sexually ? | having two sets of chromosomes, one inherited from each parent |
| Why are most animals and plants said to be diploid ? | because all their somatic cells contain pairs of homologous chromosomes |
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