AP Bio MCQ for genetics/heredity test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Meiosis begins with a normal (___) cell with a ___ number (2n) of chromosomes. | show 🗑
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| Under normal conditions, the cell's chromosome number will become ___ (n) towards the end of telophase in Meiosis 1 (the first half of meiosis) while on its way to form gametes. | show 🗑
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| show | Fertilization
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| If the statement in #1 is applied to a mosquito, with a diploid number of 6 chromosomes per somatic cell, then its gametes would each contain ___ chromosomes | show 🗑
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| Don't forget about the other phases of the cell cycle, when the cell isn't dividing. Although chromosomes do get ___ during the S phase, the chromosome number doesn't change as a result of the S phase. | show 🗑
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| show | The next generation would get too many chromosomes
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| show | Anaphase 1
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| show | crossing over, prophase 1
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| show | increased
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| Another key event during meiosis that contributes to genetic variation is the __ __ of homologous chromosomes along the metaphase plate, supporting Mendel's 2nd law: ___ assortment of chromosomes into the gametes. Leading to more genetic ___ in population | show 🗑
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| Some types of genes result in death of an offspring, also known as ___ | show 🗑
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| show | 50%
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| In a pedigree showing a sex-linked recessive trait, you'll see more ___ affected. If a trait is not sex-linked, we say that it is ___ | show 🗑
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| show | alleles
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| individ. who are homo. for an Allele A enzyme could metabolize glucose better at 28 dC, while individ. who are homo. for an Allele B enzyme could do better at 22 dC. What's the explanation for individ. who metabolized glucose efficiently for BOTH temp.? | show 🗑
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| A unique chromosomal situation in which a person with XXY syndrome was hetero. for color blindness. Please use X^b to indicate color blindness, and write down their complete genotype indicating color blindness. What's the physical gender/phenotypes | show 🗑
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| show | nondisjunction, spermatogenesis, oogenesis
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| show | one or both parents are affected, many children are affected in both genders, all siblings linked together, mom- homozygous, dad- heterozygous
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| show | possible neither parent is affected but child is affected, few children are affected in both genders, siblings linked, mom-heterozygous, dad- heterozygous, affected child- homozygous
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| sex-linked recessive pedigree | show 🗑
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Created by:
josie_dr
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