Q: What are nondisjunction?
A: A sister chromatid is defined as the identical copies (chromatids) formed by the DNA replication of…
Q: What is meant by the termhomologous chromosomes?
A: Chromosomes are filamentous bodies present in the nucleus. They are composed of DNA(…
Q: If nondisjunction occurs in a chromosome pair, what will be its effect on the gametes and the…
A: Nondisjunction occurs when homologous chromosomes or sister chromatids fail to divide properly…
Q: What does an extra chromosome 16 mean?
A: Chromosomes, the physical carriers of genes, are the microscopic thread like structures in which the…
Q: where is the chromosome abnormality? (chromosomes 1-23)
A: The chromosomal abnormality is the result of errors in the cell division following meiosis or…
Q: What are the designations of the sex chromosomes in males of bugs, humans, and butterflies?
A: Chromosomal determination of sex It is also known as allosomic determinati9on of sex and is based on…
Q: If there are 9 chromosome pairs, how many univalents are there at anaphase?
A: The chromosomes are found in eukaryotic cells that is the compact form of DNA. The DNA with histone…
Q: How many chromosome duplications take place in Meiosis?
A: Meiosis: It is the process of cell division forming four daughter cells that contain half of the…
Q: What are some chromosome 8 disorders?
A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…
Q: what is the benefit of crossing over?
A: REPRODUCTION:- It is the production of offspring from the parents. It is of two types:- 1)Asexual…
Q: What happens if there is missing chromosome 3?
A: The humans consist of 46 chromosomes in each cell that are divided into 23 pairs. Chromosome 3 is…
Q: What is the other name given to sex chromosomes? What is the function of sex chromosomes?
A: Introduction - A sex chromosome is a chromosome that is different in shape, size, and behaviour from…
Q: What are sex chromosomes?
A: Chromosomes are thread-like structure, which are composed of nucleic acids and protein. They are…
Q: Are there trisomies of the other chromosomes besides chromosome 21?
A: Yes, besides chromosome 21, other trisomies are also there.
Q: What are some chromosome 1 disorders?
A: The chromosomes are the thread like structure that contains hereditary information in the form of…
Q: What is inversion heterozygotes ?
A: Heterozygote can be defined as the genes that are for the specific trait are considered to be…
Q: What does an extra 22 chromosome mean?
A: Chromosome is the DNA molecule with part or all of the genome (genetic material) of an organism. In…
Q: What happens if there is missing chromosome 9?
A: Missing or deletion of chromosome is a type of chromosomal aberration which leads to many rare…
Q: What are some chromosome 12 disorders?
A: The hereditary length of chromosome 12 is roughly 132 Mb. It is around 4–4.5% of the absolute human…
Q: How many chromosomes are involved in duplication?
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: Where do centromeres dissolve in meiosis?
A: Meiosis is a kind of cell division occurring in the germ cells of the body that gives rise to four…
Q: What happens if there is missing chromosome 11?
A: The chromosome is a thread-like structure that contains genetic material or protein synthesis…
Q: How did the cessation of crossing-over contribute to the disparity between the X and Y chromosomes?
A: Crossing over is a process where two homologous chromosomes exchange their genetic material to…
Q: What is the total number of chromosomes you receive from both parents?
A: Alleles are considered as the variant of the gene. DNA is composed of different nucleotides that…
Q: What happens if you have an extra chromosome 23?
A: A chromosomal disorder is an anomaly, aberration, or mutation is a missing, extra, or irregular…
Q: What are some chromosome 4 disorders?
A: Chromosome 4 is one of the chromosomes of humans from 23 pairs. The organisms consist of two copies…
Q: What are nonhomologous chromosomes?
A: The chromosome is an organized structure of proteins and DNA (Deoxyribonucleic acid) in a cell. It…
Q: What is chromosomal rearrangements?
A: “Chromosomes” are “thread-like structures” and is composed of “protein” and a “DNA molecule” which…
Q: What are the possible effects of chromosomal rearrangements?
A: In genetics, a chromosomal rearrangement or Any alternation in the sequence of nucleotide in the…
Q: Which non-disjunction event has more chromosome number aberrations? Why?
A: Meiosis is a reductional division. It produces haploud gametes.
Q: What is the difference between alleles and homologous chromosomes?
A: The term 'chromosome' has been derived from the Greek words which means 'color (chroma) and body…
Q: What is the rule of inversion?
A: Genes are the functional unit of heredity. The genes code for proteins which are vital for growth…
Q: Why are changes in chromosome number almost always more severe than changes in chromosome structure?
A: Introduction Chromosomal aberrations are the common cause of abnormal development of the embryo or…
Q: During meiosis, does random assortment occur before or after crossing-over?
A: Meiosis is the cell division that includes meiosis I and meiosis II without any DNA replication…
Q: What does the 1 chromosome do?
A: Heredity depends on the inheritance of characters from one generation to another. The machinery of…
Q: What are homologous chromosomes? What happens to homologous chromosomes during meiosis?
A: Meiosis is reductional division. Mitosis is equational division.
Q: What are some chromosome 10 disorders?
A: Chromosome is the rod shaped, dark stained bodies which are most prominently seen in the metaphase…
Q: What are some chromosome 2 disorders?
A: Chromosomal disorders are those that are resulting from the altered number of chromosomes. The…
Q: What type of nondisjunction is the chromosome abnormality? Trisomy Or Monosomy
A: Trisomy: when one chromosome is present in 3 copies then the condition is called trisomy. The total…
Q: What are some chromosome 14 disorders?
A: Chromosome disorders can be classified into two main types namely numerical and structural.…
Q: Why do individuals with an excessive number of sex chromosomes often show minimum phenotypes?
A: Introduction :- The X and Y chromosomes are found in humans and most other mammals. Males have both…
Q: How Chromosomal Rearrangements are Caused?
A: Numerous structural rearrangements in chromosomes have been characterised, inversions and…
Q: How might abnormal meiosis lead to alterations in chromosome number or structure?
A: A total of 46 chromosomes (or 23 pairs of chromosomes) are found in nearly every cell in our body.…
Q: How do we know if Nondisjunction occurs in meiosis one or two?
A: Meiosis is a type of cell division which generally occurs in germ cells or reproductive cells.…
Q: what is Meiotic Nondisjunction?
A: Meiosis is also known as a double division that occurs in a diploid cell and gives rise to four…
Q: What is the relationship between the severity of symptoms and the size of the chromosome involved in…
A: More the size of the chromosomes involved in the trisomy, more will be the severity of symptoms.…
Q: How many genes are there on chromosome 4?
A: Chromosomes are the condensed form of chromatin. The chromosomes contains packed DNA which contains…
Q: What are some chromosome 11 disorders?
A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…
Q: What is Nondisjunction? How is it linked to meiosis, mitosis and cancer?
A: Nondisjunction is the failure of homologous chromosomes or sister chromatids to isolate subsequently…
Q: What is the Y Chromosome ?
A: A chromosome is a lengthy DNA molecule that contains all or parts of an organism's genetic material.…
How does nondisjunction lead to disorders in chromosome number?
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- In the classic "X" figure of the chromosome, is the whole X from one parent, or is one side of the X from the mother and the other side from the father?What type of nondisjunction is the chromosome abnormality? Trisomy Or MonosomyWhat are the clinical consequences of abnormalities in chromosome structures?
- In general, why do changes in chromosome structure or numbertend to affect an individual’s phenotype? Explain why somechanges in chromosome structure, such as reciprocal translocations,do not.What are some chromosome 14 disorders?Two phenotypically unaffected parents produce two children withfamilial Down syndrome. With regard to chromosomes 14 and 21,what are the chromosomal compositions of the parents?