What is inversion heterozygote?

Q: What causes   Allopolyploidy?

A: Polyploidy is a phenomenon of having more than two sets of chromosomes. It occurs due to failure of…

Q: What is parental or noncrossover gametes?

A: Actual traverse during meiosis I is a typical occasion. The impact of this occasion is to improve…

Q: For a couple, what is the significance of knowing chromosomal aberrations?

A: Chromosomes are thread-like structures present inside the nucleus of the cell. They are made up of…

Q: In Meiosis, what is a tetrad?

A: A Bivalent or the pair of homologus chromosome with 4 sister chromatids. It is typically formed…

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: In which meiotic division does the separation of the homologous occur? What are the ploidies of the…

A: Meiosis is a mode of cell division. In this one cell divides to form 4 cells.

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 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 are two nonhomologous chromosomes exchange parts?

A: Translocation is a type of chromosomal abnormality in which a chromosome breaks and a portion of it…

Q: Given the end results of the two types of division, why is it necessary for homologs to pair during…

A: Cell cycle is a series of changes that occurs in a newly divided cell through which it duplicates…

Q: Consider Cyclic Crossover on two Parent chromosomes: Parent1 = A0846172593B and Parent2 =…

A: The child chromosome will be... chromosome no 1 is... A94B5721608A chromosome no 2 is...…

Q: What are Sex-linkage?

A: Sex linkage is the phenotypic expression of a trait governed by the presence of the mutations in the…

Q: If a diploid cell entering meiosis has 12 chromosome pairs, what is the number of possible…

A: Meiosis is a process of cell division, where cell divides twice to produce four daughter cells which…

Q: What is meant by aneuploidy?

A: The chromosomes are thread-like structure located in the nuclei of both plant and animal cells. They…

Q: Why does more crossing over occur between two distantly linkedgenes than between two genes that are…

A: Answer- Crossing over is the mechanism in which a part of the sister chromatids of the homologous…

Q: What is inversion heterozygotes ?

A: Heterozygote can be defined as the genes that are  for the specific trait are considered to be…

Q: In a species with 2N of 10, how many chromosomes are in a autotriploid?

A: *Polyploidy: Having multiple sets of chromosomes Ex. Triploid 3n , tetraploid 4n *Autotriploidy ( 3n…

Q: what are duplication heterozygotes

A: Duplication (Dp) is a chromosomal rearrangement that leads to an increase in the number of a…

Q: If an organism has a haploid number of three, how many tetrad structures will align on the…

A: If an organism has a haploid number of three, how many tetrad structures will align on the…

Q: What is the end result of crossing over?

A: Crossing over allows the exchange of genetic material and forms unique combinations of alleles. This…

Q: What can be concluded about the severity of nondisjunction that occurs in meiosis I as opposed to…

A: Nondisjunction is the condition where the sister chromosomes fail to separate properly during cell…

Q: Assume that meiotic nondisjunction event causes trisomy 8 in a newborn. If two of the three copies…

A: Nondisjunction is that the failure of the chromosomes to separate, that produces daughter cells with…

Q: What does compound heterozygous mean and explain What causes heterozygous?

A:

Q: In what phase of meiosis is chromosome recombination most common?

A: Introduction :- Meiosis is a process in which a single cell divides twice to produce four cells with…

Q: Is a trisomic an aneuploid or a polyploid?

A: Trisomy is a genetic condition in which an extra chromosome or part of a chromosome is added to a…

Q: Why is the frequency of recombinant gametes always half the frequency of crossing over?

A: Crossing over is the way in which exchange of genes between two chromosomes, lead to non-identical…

Q: What is Sex-linkage?

A: Introduction In this question we will discuss about the sex linkage.

Q: An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B •…

A: In a reciprocal translocation, two broken pieces are joined together which are non-homologous to…

Q: Given the diploid chromosome number highlighted above, what is the haploid chromosome number?

A: Cell division is the process of division of cell which occurs by two process - Mitosis Meiosis…

Q: What is the cause of aneuploidy?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: Is Robertsonian translocation reciprocal?

A: Chromosomes are thread-like structures that are located in the nucleus. It is composed of protein…

Q: At what stage of meiosis (I or II) does crossing-over occur?

A: Crossing-over is a process that occurs during meiosis (I or II) whereby homologous chromosomes…

Q: In a diploid cell for which 2n = 20, how many chromosomes will be present in daughter cells after…

A: Cell division forms a significant part of the cell cycle. During cell division, the parental cell…

Q: How does nondisjunction lead to disorders in chromosome number?

A: When the nucleotides sequences in the genome of an organism are altered or changed due to mistakes…

Q: What is a partial diploid?

A: The term diploid refers to the status of ploidy level in the cells of an organism. Ploidy is defined…

Q: An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B •…

A: Translocation is caused Due to separation of a chromosome segment and its union to a non-homologous…

Q: What is crossover? When does it happen? What are the consequences?

A: The cell cycle is the sequence of events that take place in the cell. The cell cycle has 4 main…

Q: why Monoploids as well as polyploids containing odd numbersof chromosome sets are usually sterile?

A: The changes in the chromosome are of two kinds that involve changes in the complete set of the…

Q: Two phenotypically unaffected parents produce two children withfamilial Down syndrome. With regard…

A: Chromosomal aberrations include changes in the structure and number of chromosomes. Thus, meiosis…

Q: What is the difference between polygeny and pleiotropy?

A: Biological inheritance, also called heredity, is the process by which different traits are passed on…

Q: Why are the homologous regions of the X and Y chromosome important during meiosis?

A: One of the defined types of cell divisions characterized by the occurrence of two rounds of division…

Q: there are 9 chromosome pairs, how many univalents are there at anaphase I on each pole?

A: Anaohase 1 is the  stage of meiotic first division in which the paired chromosome separates and move…

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: An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B…

A: Translocation in chromosomes refers to the abnormal chromosomal rearrangement. It could be a…

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…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: