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Summary: Bio152
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Read the summary and the most important questions on BIO152
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1 Lecture deck 6: Mitosis & Meiosis
This is a preview. There are 39 more flashcards available for chapter 1
Show more cards here -
A diploid organism which has 12 chromosomes in its gametes would have how many chromosomes in its somatic cells?
24 chromosomes -
If a triploid human could survive, each of its somatic cells would have ? chromosomes.
69 chromosomes -
Under A microscope, you view a somatic cell (2n = 4) that is not dividing nor preparing for division. What do their chromosomes look like?
?? -
The Famously Drawn “X” Chromosome
The "X" chromosome only exists in that form in prophase (they don't stay in X shaped form forever!) -
What accounts for variation and resemblance in families?
Heredity -
why can’t mules have offspring?
Different number
chromosomes: donkeys have
62, horses have 64.
• Offspring have 63
chromosomes (which can’t
divide evenly) -
What happens in crossing over after homologous chromosomes align?
homologous portions of two non-sister chromatids trade places -
Independent assortment of chromosomes
# of combinations possible when chromosomes assort independently into gametes is 2n,
n = haploid number -
1.4 Lecture deck 8: Chromosomal Inheritance
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What is the probability of a child inheriting the dominant trait ifboth parents are heterozygous?
The probability that the child will inherit the dominant phenotype/trait if both parents are heterozygous is 3/4 -
Probability of a child inheriting the dominant trait if one parent is homozygous dominant and the other does not carry the dominant allele at all?
all children will receive dominant allele
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