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Syllabus
(A) Cytokinesis
(B) Mitosis
(C) Meiosis
(D) Karyokinesis
e) A homozygous tall plant (T) bearing red coloured flowers (R) is crossed with a Homozygous dwarf (t) plant bearing white flower (r)
i. Give the genetype and phenotype of the F1, generation.
ii. Mention the possible combination of gametes that can be formed from the F1, hybrid plant.
iii. List the phenotype of the offsprings of the F2 generation
Q.7. Name the three end products of photosynthesis.
S-phase: During this phase, replication of DNA takes place. Each chromosome contains two sister chromatids, that are attached to a common centromere. At this stage the cell is 4n (4 copies of each DNA molecule, 2 in each homologous chromosome).
(a) Name the following
(i) The solid mass which left behind the clot.
(ii) Specific sequences of nucleotides on a chromosome, those encode a particular proteins.
(iii) The tissue concerned with upward conduction of water in plants.
(iv) The full complement of DNA of an organism .
(v) The difference between the birth rate and the death rate.
Q. At prophase, chromosomes remain condensed so how can it say that chromosomes become visible as fine long threads?
99. _____ are useful in providing information for identification of names of species found in an area.
(a) Flora (b) Manuals
(c) Monographs (d) Catalogues
100. Catalogue is a
(a) list or register containing names of all the species found in a particular place
(b) booklet containing all the characters and their alternates which are helpful in identifying all the taxa
(c) handy book containing instruction of a species
(d) treatise having all informations about a particular taxon.
1.Genetic composition of an organism.
2.What are the constituents of gametes?
3.Write al possible combination of gametes that can be obtained in F1 hybrid of pure breeding pea plant with round and yellow seeds with another plant with wrinkled and green seeds.
4.Name a pair of chromosome carrying alleles for a particular character.
5.V-shaped chromosomes having centromere at centre.
6.Stage after crossing over occurs in meiosis.
If Anaphase ...Why?
If Metaphase..... Why not???
6. Everyone in Squidward's family has light blue skin, which is the dominant trait for body color in his hometown of Squid Valley. His family brags that they are a "purebred" line. He recently married a nice girl who has light green skin, which is a recessive trait. Create a Punnett square to show the possibilities that would result if Squidward and his new bride had children. Use B to represent the dominant gene and b to represent the recessive gene.
A. List the possible genotypes and phenotypes for their children.
B. What are the chances of a child with light blue skin?_______%
C. What are the chances of a child with light green skin?_______ %
D. Would Squidward's children still be considered purebreds? Explain!