Which of the following is TRUE about gametes? a) undergo meiosis b) formed by mitosis c) always have 23 chromosomes d) fuse to form a diploid zygote   In the ___ phase of the cycle, the cell grows, carries out basic functions, and may enter a non-dividing Go phase.   Which of the following is FALSE about DNA replication? a) replication occurs at multiple points simultaneously b) nucleotides are added in the 5' to 3' direction only c) energy is required for replication d) replication is 100% accurate   Meiosis results in the generation of _____ haploid cells.

During meiotic prophase in a eukaryotic cell, Spo11 initiates recombination by causing a double-strand break in DNA between Gene   A and Gene   B on one sister chromatid. Which of these events will occur prior to formation of a Holliday junction?                         A)   A heteroduplex forms due to pairing of Gene   A and Gene   B.                   B)   Resolvase cuts all four chromatids.            C)   Spo11 causes a double-strand break in a nonsister chromatid.            D)   Strand invasion causes one strand of the uncut chromatid to form a D loop.            E)   Branch migration lengthens the heteroduplex region to include Gene   A and Gene

Variations in chromosome structure are important for which of the following reason(s)?Question 5 options: A) evolution of new species B) may result in the production of abnormal offspring C) may alter the phenotype of an organism D) all of the answers are correct

Hello, i understand the question, but i only need to know which option is right, no need for explanation. thanks in advance.

reference  https://docs.google.com/document/d/1X_EIrH_B_oQX_JrwDwvH0gtp23He5huL/edit?usp=sharing&ouid=112773310083655224803&rtpof=true&sd=true

Progression of cells through the division cycle is regulated by both extracellular (environmental) and internal signals that monitor and coordinate processes during phases of cycle. a) True b) False

The dog Canis familiaris is a diploid organism with 39 pairs of homologous chromosomes. For the dog, how many chromosomes and chromatids are present in one nucleus at each of the following stages of the cell cycle? i. A somatic cell before replication ii. A somatic cell after replication iii. A somatic cell in Prophase of mitosis iv. One product of Telophase of mitosis v. A meiocyte in Prophase I of meiosis vi. A meiocyte in Prophase II of meiosis vii. One product of telophase II of meiosis

The figure below shows the life cycle of the fungus Neurospora. The adult stage of the Neurospora is a multicellular haploid: a. Between which two stages of the Neurospora life cycle do most mitotic cell divisions occur?  b. Neurospora has an arginine amino acid synthesis pathway shown below: Suppose I have a neurospora strain that has a mutation such that it will not grow unless I supplement the media (food) with arginine (but not with citrulline or ornithine). What gene is mutated? Explain your reasoning.  c.  Suppose I take the strain above that only grows with arginine supplements and cross it to a different mutant Neurospora strain that grows with arginine and citrulline supplements but not ornithine supplements. Assming genes A, B and C are unlinked and there is only one mutation per strain: i) What percentage of the progeny will grow on ornithine? ii) What percentage on citrulline? iii) What percentage on arginine? Show your work for i), ii) and iii). [Can be answered in less…

Answer choices: 1) a cell with two complete sets of chromosomes  2) a chromosome pair, one maternal and one paternal 3) the events that occur from the time a cell forms until the time it divides 4) time of cell growth 5) cell division that maintains chromosome number 6) a reproductive mode by which offspring are produced by one parent only 7) an exact copy of a chromosome