Number of genes on first chromosome and Y chromosome respectively observed in human genome project are
A. 231, 2968
B. 2968, 231
C. 2968, 2968
D. 231, 200

The number of genes found in chromosome 1 and Y-chromosome fo human being are__and __ respectively.

The chromosomes which contain maximun and minimun number of genes in human genome are

Four genes A, B, C and D located on chromosome and cross over frequencies between different genes are : A – D implies 20%, A – C implies 4% C – D implies 16%, B – C = 9% A – B = 5% based on above data, what is the arrangement of linked gene on chromosome

Complete haploid set of chromosomes of a species is (a) Genome (b) Genotype (c) Genetic code (d) Allele

A scientist performed the gene mapping experiments in maize. He mapped the gene on chromosomes on the basis of % crossing over between different genes. One map unit corresponds to one % crossing over or recombination. Te genes showing more than 50% recombination were not supposed to be linked on same chromosome. In crossing over studies on maize, scientist observed the following % crossing over between A B, C, d- between. A and D 10% between A and C 3% between genes C and D 7% between genes A and B 5% , and between genes C and B 8% on the basis of above observation find out the correct sequence of tenes Alt B, C, and D on chromosomes :-

If an angiospermic plant has 48 chromosomes in its leaf cell then, the number of chromosomes present in synergid, pollen grain, nucellus & endosperm cell respectively will be (a) 12, 12, 24, 36 (b) 24, 24, 48, 72 (c) 48, 24, 48, 24 (d) 12, 24, 24 , 36

The human chromosomes with the highest and least number of genes in them are respectively :

Number of chromosomes is 24 in nucellus. Number of chromosomes in microspore mother cell would be (a) 36 (b) 24 (c) 30 (d) 12

Given below are assertion and reason. In humans the gamete contributed by the male determines whether the child produced will be male or female. Reason. Sex in humans is polygenic trait dependent upon the com ulative effect of some genes on X-chromosome and some on Y-chromosome. Point out if both re true with reason being correct explanation (A). Both are true but reason is not correct explanation (B), assertion is true but reason is wrong (C ) and bothare wrong (D). Assertion .

Go through the features of human genome (i) Largest human gene is dystrophin with 2.4 million bases (ii) Chromosome 1 has maximum number of genes, i.e., 2968 and y-chromosome has minimum number, i.e., 231 (iii) the human genome contains 3164.7 billion nucleotide bases (iv) The total number of genes is estimated at 30,000 Which of these are correct?