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bio 4hw

During the condensation of DNA, the double helix is wrapped around these small proteins histones
During this phase of the cell cycle, DNA is duplicated (synthesized). S phase of interphase
If a cell is preparing to divide, DNA replication must occur during interphase
Which of the following human cells is unlikely to divide? neuron
In the mitotic spindle, where do microtubules attach to the chromosome? kinetochore
are changes in the order of nucleotides in a segment of DNA that codes for a protein gene mutation
If the M checkpoint is not cleared (didn't pass "inspection), which stage of mitosis would not occur? anaphase
Meiosis produces _____ daughter cells. four haploid
At which stage of meiosis does crossing over occur? Prophase I
Which structure assists in the lining up of chromosomes to form the tetrads? synaptonemal complex
What phase of mitotic interphase is missing from meiotic interkinesis? S
Nicknamed the 'Guardian of the Genome' this important protein is essential checking for DNA damage and correct replication p53
Within a species, any sperm can fertilize any egg. This is an example of random fertilization/mating
Which of the following is NOT a similarity between mitosis and meiosis both result in genetic recombination
DNA is duplicated during Mitosis, Meiosis I, and Meiosis II. False
When comparing spermatogenesis and oogenesis, which of the following ONLY applies to oogenesis? At the time of birth all gametes have been produced
The end of spermatogenesis results in the formation of four haploid sperm
The ovum and sperm although different in size, contain approximately the same amount of cytoplasm. False
Before sexual reproduction can occur, the number of chromosomes in a diploid cell must decrease by half. true
he number of homologous sets of chromosomes in a cell is referred to as: ploidy
Crossing over occurs in Meiosis I and Meiosis II False
Which of Mendel's Laws of Genetics states: "in a cross between parents that are pure for contrasting traits, only one form of the trait will appear in the next generation." Law of Dominance
Which of the following is NOT a a polygenetic trait? tongue rolling
The most common trisomy in humans is Trisomy 21
Nondisjunction of chromosomes may occur in either Meiosis I or Meiosis II true
Changes in chromosomal numbers are often fatal. However, extra copies of sex chromosomes are more tolerated than autosomes. True
An XXY male would be diagnosed with Klinefelter Syndrome
Which of the following are autosomal dominant disorders? Polydactyly Huntington's Disease
In this pedigree pattern, most affected children have unaffected parents and heterozygotes are unaffected. autosomal recessive
What is the name of the chromosomal disorder shown in the karyotype below? (monosomy in x chromosome) Turner Syndrome
Created by: user-1927187
 

 



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