10th Class Biology Chapter 6 Inheritance Short Questions Answer
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10th Class Biology Chapter 6 Inheritance Short Questions Answer
It is the form of appearance of a trait in an individual.
Partners of a gene pair are called alleles.
Chromosomes were discovered by waldeyer in 1876
the position of a gene on the chromosome is called locus.
An exchange of segments between non-sister chromatids of homologous chromosomes occurs at the chiasmata.This process is called crossing over.
The study of inheritance and genetic material is called genetics.
Two chromosomes, which are similar in their shape, size and position of centromere, make one homologous pair.
The total amount of genetic material in a chromosome set of an individual is called its genome.
The phenomenon of staying together of all the genes of a chromosome is called linkage.
X-being larger has more number of genes while Y-being smaller has small number of genes.
The entire chromosomes complement of an individual or cell is called karyotype.
The genetic makeup of an individual is called its genotype.
For him these were discrete physical units of inheritance. Johansson coined the term gene and people started calling them genes. Today for us these factors are parts of DNA, the base sequence that carry the biological information to determine a trait. Mendel’s factors are alleles of genes
More than two alternative form of a gene are called multiple alleles.
Bacteria make restriction enzymes for their own defense. These enzymes cut unwanted DNA into pieces
A hereditary disease is a body malfunction caused by a gene. It cannot be cured unless the malfunctioning gene is repaired or replaced by a normal one.
The two coexisting alleles of an individual for each trait segregate during gamete formation so that each gamete gets only one of the two alleles. This is called Mendel’s law of segregation.
It is a matching in which an individual showing a dominant phenotype is crossed with an individual showing its recessive phenotype.
A son receive X-chromosomes from his mother any Y from his father. A daughter receive one X from her father and other X from her mother.
The number of linkage groups corresponds to the number of homologous pairs of chromosomes. You have 23 linkage groups .A frog has 13 linkage groups.
It is a simple method for tracking the kinds of gametes and their all possible combinations at fertilization. Each block of square represents a possible combination of alleles. It was proposed by a British mathematician named punnett.
Traits with a few phenotypes are determined by a few alleles of a gene. Traits with many phenotypes need many alleles of different gene.
More than two alternative form of a gene are called multiple alleles.
It is a matching in which an individual showing a dominant phenotype is crossed with an individual showing its recessive phenotype.
When two contrasting pairs of traits are followed in in the same cross, their alleles assort independently into gametes. This called law of independent assortment.
Arrangements of nitrogenous bases in a linear order in DNA molecule is called base sequence.
Autosomes do not carry any sex determining gene. All chromosomes other than sex chromosomes are called autosomes. The genes on autosomes determines autosomal traits.
Genes are the units of inheritance because these determine inherited character. The terms hereditary and inheritance are more or less synonymous. Biological inheritance is the passage of traits determined by genes from one generation to the next.
Transfer of characteristics from parents to off springs is called heredity.
Closer the two gene loci, more strongly are their genes linked. The father apart two genes lie greater are the chances of their separation through crossing over.
