What is a diploid cell?
One that has two copies of each chromosome – one from mom and one from dad. |
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A cell that carries the mutation for Cystic Fibrosis. |
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Another term for a sperm or egg cell. |
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A cell that carries only one copy of the X chromosome |
A. One that has two copies of each chromosome – one from mom and one from dad
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What is a diploid cell? One that has two copies of each chromosome – one from...
1) If the egg with two copies of chromosome 21 were fertilized by a normal sperm how many copies of chromosome 21 would there be in the zygote? 2) How many copies of chromosome 21 would there be in each cell in the embryo that developed from this zygote?
Explain why a mutation in only one of two copies of a proto-oncogene in a diploid cell can promote the development of cancer (5 points), whereas both copies of a tumor-suppressor gene need to be mutated to do likewise (5 points).
Which of the following statements is TRUE? (a) Diploid organisms reproduce only sexually. (b) All sexually reproducing organisms have at least two copies of each gene at some stage in their life cycle. (c) Gametes have only one chromosome. (d) Another name for the unfertilized egg cell is the zygote. (e) Mutations in somatic cells are passed on to individuals of the next generation.
You are making an artificial eukaryotic chromosome, and you plan to add two copies of this chromosome to the nucleus of a diploid yeast cell. What characteristics would you include in the chromosome to make sure that the chromosome pair is (a) properly replicated and (b) passed to each daughter cell during cell division of the yeast? What characteristics could you add to the chromosome to increase the rate of DNA replication?
is caused by a single gene that is located on the X chromosome. Because human females have two X c (XX), they have The disease two copies of this gene. Since hemophilia is recessive (h), a female must have two copies of the recessive allele to have the disease A human male (XY) on the other hand, has only one X chromosome, and so needs only one copy of the recessive allele to have the disease Complete the Punnett square...
ESC ? V AD RO 13. Diagram a diploid cell (2N-4) completing meiosis. On each chromosome place two genes, and assume each member of a homologous pair of chromosomes carries a different allele of the two genes tha reside on it. Use letters to denote genes, and upper/lowercase to indicate alleles. 14. In regard to your diagram for #17 above: a. how many daughter cells are produced by one complete round of meiosis?
The process of sexual reproduction versus several forms of parthenogenesis sexual reproduction haploid parthenogenesis diploid parthenogenesis meiosis meiosis automixis meiosis apomixis mitosis oocyte (immature female egg cell) spermatocyte (male sperm cell) oocyte oocyte female egg cell diploid zygote chromosome replication fuse with other oocyte haploid zygote (2n 2n diploid egg develops into diploid individual diploid zygote develops into haploid individual haploid (2n) diploid develops into diploid individual develops into diploid individual © Encyclopædia Britannica, Inc. Answer the questions below in...
Given that TP53 is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without the recessive gene? Given that is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without...
Instructions Below is a picture of George's chromosomes (a hypothetical example). They show his genotypes for Cystic Fibrosis (Cc), ear attachment (ee), tongue rolling (Tt), and polydactyly (Pp) Mand Drepresents the chromosomes he inherited from Mom and Dad, and the number indicates which chromosome the genes for the above traits are on. Chromosome 1 Chromosome 2 Chromosome 3 M3 D3 M1 D1 M2 D2 T It C P p e In the following activity you will draw pictures of George's...
Observation: Sex Chromosome Anomalies A female with Turner syndrome (XO) has only one sex chromosome, an X chromosome; the O signifies the absence of the second sex chromosome. Because the ovaries never become functional, these females do not undergo puberty or menstruation, and their breasts do not develop. Generally, females with Turner syndrome have a short build, folds of skin on the back of the neck, difficulty recognizing various spatial patterns, and normal intelligence. With hormone supplements, they can lead...