Humans have 46 chromosomes in each somatic cell.a. How many chromosomes does a child receive fromits father?b. How many autosomes and how many sex chromosomes are present in each somatic cell?c. How many chromosomes are present in a humanovum?d. How many sex chromosomes are present in ahuman ovum?

Q: Which statement about homologous chromosomes is FALSE?   Select one: a. They contain the same…

A: Homologous chromosome – During fertilization in a cell, one from the pair from the mother and…

Q: An organism has a diploid number of 20 in a primary oocyte. a. How many tetrads are present in the…

A: Oogenesis is a kind of gametogenesis. It produces four haploid gametes (egg) from single parent…

Q: Which event takes place during anaphase II of meiosis?

A: Meiosis is a nuclear division in which a parent cell gives rise to four genetically distinct…

Q: At which stage do homologous chromosomes separatefrom each other?

A: A set of the maternal and paternal chromosomes is collectively known as a homologous chromosome.…

Q: Imagine that you are a cell with 88 chromosomes undergoing meiosis How many chromosomes would your…

A: Cell division can take place either via mitosis or via meiosis. The meiosis of a parent cell will…

Q: I have a doubt, I'm not sure if the chromosomes are a boy or a girl? Or if the chromosomes have any…

A: Monosomy is an aneuploidy in which only one of a pair of chromosomes is present. When a section of…

Q: In human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and…

A: Human reproduction involves the formation of sexual gametes (egg and sperm) and fusion of…

Q: During which phase of the mitotic cycle would the terms chromosome and chromatic refer to identical…

A: Deoxyribonucleic acid, abbreviated as DNA, is a double-helix made-up of nucleic acids. Its role in…

Q: What are Extrachromosomal elements?

A: Chromosomes are thread-like structure, which are composed of deoxyribonucleic acid (DNA) and…

Q: Below is a diploid cell in meiosis. a. How many 'a' alleles are present in Anaphase 1? b. How many…

A: A cell undergoes cell division to make daughter cells .For cell division it must undergo replication…

Q: The somatic cells of most individuals with Down syndrome contain an extra chromosome 21, for a total…

A: Chromosomes are composed of proteins and Deoxyribonucleic Acid (DNA). These structures are in the…

Q: If dog’s body cells have 78 chromosomes, how many chromosomes do their gametes have?

A: Gametes are the haploid cells (n) which are produced from diploid (2n) cells by the process of…

Q: The repeat expansion appears to occur during meiosis but not mitosis. Why mightthis be true?

A: Repeat expansions refer to the duplication of a single codon extensively. They are a type of dynamic…

Q: When does DNA replication occur during meiosis?   a. during telophase    b. during…

A: Meiosis is a process where a single cell divides twice to produce four cells containing half the…

Q: What are chromosomal disorders? Also gives a suitable example.

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

Q: What distal to them are responsible for holding the homologous chromosomes together during pro-phase…

A: Chiasmata is a point that links the two chromatids of homologous chromosomes together. At this…

Q: If an organism’s somatic cell has 2n=8, what will be the chromosome number of its gametes (undergo…

A: Meiosis is a reductional process. It is responsible for producing the gametes.

Q: What are homologous chromosomes? a. The two halves of a replicated chromosome b. Two identical…

A: Introduction  A chromosome is consisted of two arms known as chromatids. These arms are denoted as…

Q: Do you know of any genetic diseases or disorders that result from errors in mitosis or meiosis? How…

A: Introduction: Mitosis and meiosis are processes and fundamental stages of cell division and cell…

Q: how many sex chromosomes are in a human gamete? A-five B- four C- one  D- two  E- three

A: Chromosomes are present inside the cell nucleus and made up of DNA (Deoxyribonucleic acid) molecules…

Q: Dogs have 78 chromosomes in their diploid cells. If a diploid dog cell enters meiosis, how many…

A: chromosomes and chromatids will be present in each daughter cell at the end of meiosis I :

Q: Dogs have 78 chromosomes in their somatic cells. How many chromosomes are in their gametes?

A: Somatic cells are the body cells that are not the reproductive ones that is sperm and egg cells.…

Q: An organism has 34 chromosomes in a somatic cell.  How many chromosomes will be in each cell after…

A: There are two types of cell division: Mitosis Meiosis

Q: Within the sperm and egg cells of a frog, there are 13 chromosomes.  What would be the diploid #?

A: A frog gamete has 13 chromosomes.

Q: If you have 16 chromatids inside the cell before meiosis, how many chromosomes will be present in…

A: Meiosis is a type of a cell division used for producing the gametes (egg cell or sperm) in the…

Q: a. Assuming that no cells die, how many cells will there be in one week? b. Assuming that the…

A: Mitosis is the process by which a cell divides into two daughter cells that will possess the same…

Q: A) Hoe many cells are produced by the end of meiosis II? B) Are the cells produced at the end of…

A: Meiosis is a type of cell division. It is the mode of cell division in which one cell divided into…

Q: If human somatic cells have 46 chromosomes, how many chromosomes do human gametes have?

A: The size of chromosomes vary from species to species and genera to genera. Usually, within a…

Q: A cell that is 2n=40 undergoes meiosis, how many pairs of chromosom will each daughter cell have at…

A: Cell division is the process through which cells multiply in numbers. It undergoes both cytoplasmic…

Q: If a cell has a diploid number of twelve (2N = 12) before meiosis, how many chromosomes will be in…

A: The process by which two sets of chromosomes migrate in the same pole during segregation (gamete…

Q: A mature female tiger, with 38 diploid chromosomes in each somatic cell, produces haploid oocytes…

A: Chromosomes are present inside the cell nucleus and made up of DNA (Deoxyribonucleic acid) molecules…

Q: The somatic cells of a given species contain 14 pairs of chromosomes. If a gamete receives one…

A: Somatic cells contain 2n number of chromosomes (diploid) and gametes contain n number of chromosomes…

Q: Why is it necessary for the chromosomes to condense during mitosis and meiosis? What do you think…

A: Chromosomes In nucleus, the thread like structure present which contains genetic information are…

Q: If a diploid organism has 14 chromosomes (2n=14) a.  How many chromosomes will its gametes have?…

A: Introduction: Meiosis is type of cell division which  results into the  four daughter cells each…

Q: The cells illustrations below represent different stages of meiosis. In which order would these…

A: Cells are the smallest functional and structural unit of all organisms. All cells have a cell…

Q: A chicken has 78 chromosomes in its somatic cells. How many chromosomes did the chicken inherit from…

A: Chromosomes are present in the cells as sets and the number of sets of these chromosomes contribute…

Q: There are 56 chromosomes in a mature elephant cell. If one of the elephants cells responsible for…

A: Meiosis is a process of cell division in which a single cell divides into four daughter cells such…

Q: During meiosis in male mammals, sex chromosomes segregate to produce two types of sperm: X‑bearing…

A: In mammals sex determination is male heterogametic type in which the male produces two types of…

Q: a. If cell division during gametogenesis is non-meiotic, what is its consequence to the future…

A: A diploid somatic cell undergoes mitosis. a mitotic division results in two daughter cells which are…

Q: The normal chromosome number of human sperm is 23. If a person is born with a trisomic condition,…

A: Trisomic condition is a type of aneuploidy. Aneuploidy involves the change in chromosome number by…

Q: A) At the end of meiosis I, how many chromosomes are in each cell? B) Are the cells haploid or…

A: Cell division is a biological process that results in the production of two or more daughter cells…

Q: recently discovered bird species was found to have 29 chromosomes in its somatic cells before S…

A: Mitosis and meiosis are the two processes by which cells divide in humans and most other animals.…

Q: kangaroos, the somatic cells are diploid, having 22 chromosomes. How many chromosomes are present in…

A: Every cell of our body is diploid. Germinal cells are diploid too but they undergo meiosis when…

Q: A dog has78 chromosomes . How many chromosomes will a cell have after it goes through mitosis? And…

A: All over the world we can see various types of organisms. All of them have originated from a single…

Q: a. What is the diploid number of chromosomes for a human? b. What is the haploid number of…

A: Introduction Cell division is the process by which a parent cell divides into two or more daughter…

Q: Which changes in chromosome structure cause a change in thetotal amount of genetic material, and…

A: Chromosomal aberrations are changes in the number and arrangement of genes in the chromosomes. They…

Q: In a Drosophila where somatic cells have 8 chromosomes, and gametes have 4 chromosomes, what is the…

A: Meiotic cell division is the process in which a single chromosomal replications cycle is followed by…

Q: If a cell with 4 chromosomes goes through meiosis, what is the result? O A. 2 identical cells with 2…

A: Chromosomes are structures that resemble a thread and are present inside the nucleus of both plant…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.