Question
please help me with these
27) What is the difference between a benign a A) Benign tumors do not for umps B) Benign tumors do not m umor? gnan umors do gn tumors are assize, malignant composed of cancer cel C) Bent mors do D) Benign tumors are not the resu gna tumors are not tumors cycle control system, malignant of a failure of a co Homologous chromosomes 28) A) carry genes controlling the same inherited characteristics B) carry the same versions of all genes C) are a set of chromosomes that the ce received from one paren D) include only the autosomes 29) What chromosomes belong to a normal human male? 29) A) 22 autosomes and two Y chromosomes B) 44 autosomes, one X chromosome, and one Y chromosome C) 46 autosomes, one x chromosome, and one Y chromosome D) 44 autosomes and two Y chromosomes 30) 30) In meiosis, how does prophase I differ from prophase II? uring prophase I chromosomes line up in the middle of the cell; during prophase single file II the chromosomes line up in double in the middle of the cell B) In prophase I the sister chromatids are attached; in prophase II the sister chromatids are separated up; the chromosomes are not coiled up during C) During prophase I the chromosomes co prophase II D) During prophase I there is one diploid cell; during prophase II here are two haploid cells 31) 31) During metaphase I, A) sister chromatids separate and migrate to opposite poles B) crossing over occurs C) the nuclear envelope breaks up D) homologous chromosomes line up in the middle of the cell 32) One difference between mitosis and meiosis is 32) A) mitosis produces more daughter cells for each division than meiosis B) mitosis produces haploid cells, but meiosis produces diploid cells C) mitosis requires only one parent cell, but meiosis requires two parent cells D) mitosis produces cells genetically identical to the parent cell, but meiosis does not 33) Genetic variation is accomplished by a but one of the following. Choose the exception. B) A) the events of meiosis II crossing over D) the events of meiosis I C) independent assortment 34) Crossing over during prophase Iresults in B) genetic recombination A) duplication D) reciprocal translocation C) nondisjunction
Explanation / Answer
29th answer :C becoz generally human being male or female its consists of 46 chromosome numbers. 31st question :option D chromosomes are line up and when they reached middle region and chaismata formation takes place
27th answer : optionB 28th Question : optionA 30th question :option D 32question:option D 33question :option A 34 question : option B
