Download New NASC 210 Exam 2
- About 30% of chromatin is histone.
- There are two ways that chromosomes can be arranged to produce Trisomy 21.
- Centromeres which are typically found in the center of the chromosomes can sometimes be found on the end of chromosomes.
- Most unborn babies that are autosomal aneuploids go to full-term development and are born.
- Typically a human female will release approximately oocytes during her reproductive lifetime.
- Meiosis in the female gametes which results in an oocyte is called oogenesis.
- Conception is significant in biological developmental science because it involves two physical events which show that it is the starting point for the beginning life of an individual. The two events which can be found in some embryological textbooks confirming that conception is the beginning of life are;
- Which of the following is true about karyotypes?
- The oocyte is roughly times larger in volume than the sperm.
- Which of the following is true about chromatin in chromosomes?
- Which of the following is true about gametes?
- Which one of the following trisomy conditions has an 85% survival rate one year after birth?
- Maternal serum markers and ultrasound findings are used to screen for elevated risk of trisomy in a fetus.
- Individuals with Turner syndrome are missing a chromosome.
- DNA replication is a complex process involving many proteins including a protein that unwinds DNA called helicase.
- A day after fertilization the zygote undergoes the type of nuclear division called;
- Trisomy 13 children tend to have more severe health abnormalities than children with trisomy 21.
- Meiosis II is also called equational division.
- One way that RNA is different from DNA is that it contains ribose instead of deoxyribose which is part of DNA.
- Homologous pairs of chromosomes line up at the beginning of meiosis I and meiosis II.
- In order to work with DNA in the lab to look at it sequence a lot of DNA is typically needed since it is so small. Many copies of DNA are made using a process called;
- Men with XXY syndrome can father children with medical help.
- Telomeres are found on the end of chromosomes.
- During DNA replication a protein called histones copies the new strand of DNA.
- At the conclusion of meiosis I the two cells produced are;
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