phosphate . Okasaki fragments are joined together by . a) Helicase b) DNA polymerase c) RNA primer d) DNA ligase . The number of chromosomes found in human beings are .
a) pairs of autosomes and pair of allosomes. b) autosomes and allosome c) autosomes d) pairs autosomes and pair of allosomes. TEXTBOOK EVALUATION . The loss of one or more chromosome in a ploidy is called .
a) Tetraploidy b) Aneuploidy c) Euploidy d) polyploidy II. Fill in the blanks . The pairs of contrasting character (traits) of Mendel are called . .
Physical expression of a gene is called . The thin thread like structures found in the nucleus of each cell are called . . DNA consists of two chains .
An inheritable change in the amount or the structure of a gene or a chromosome is called . III. Identify whether the statement are True or False. Correct the false statement .
A typical Mendelian dihybrid ratio of F generation is : . . A recessive factor is altered by the presence of a dominant factor. .
Each gamete has only one allele of a gene. . Hybrid is an offspring from a cross between genetically different parent. .
Some of the chromosomes have an elongated knob-like appendages known as telomere. . New nucleotides are added and new complementary strand of DNA is formed with the help of enzyme DNA polymerase. .
Down’s syndrome is the genetic condition with chromosomes. IV. Match the following . Autosomes - Trisomy .
Diploid condition - : : : . Allosome - pair of chromosome . Down’s syndrome - 2n . Dihybrid ratio - rd pair of chromosome V.
Answer in a sentence . What is a cross in which inheritance of two pairs of contrasting characters are studied? . Name the conditions when both the alleles are identical?
. A garden pea plant produces axial white flowers. Another of the same species produced terminal violet flowers. Identify the dominant trait?