Scenice part(2) 564

A dogfish shark contains 24 chromosomes in each of its muscle cells. How many chromosomes are normally found in each of its sex cells?A) 6B) 12C) 24D) 48

12

The diagram below represents processes involved in human reproduction. Which row in the chart below correctly identifies the processes represented by the letters in the diagram? 1.mitosis,meiosis, fertilization,differentiation 2. meiosis,meiosis,fertilization ,differentiation 3.meiosis,mitosis,differentiation,fertilization 4.mitosis,mitosis,differentiation,fertilization

2

A sperm cell of an alligator has 16 chromosomes. What is the total number of chromosomes normally present in a stomach cell of this alligator?A) 8B) 16C) 32D) 48

32

"Meiosis creates genetic variation." Which statement below does not support this assertion? A) Daughter cells formed during meiosis are not genetically identical to either mother or father. B) Meiosis results in mixing of maternal and paternal chromosomes and crossing over. C) During normal cell growth, meiosis produces daughter cells that are identical to parent cell. D) During sexual reproduction, fusion of the unique haploid gametes produces truly unique offspring.

During normal cell growth, meiosis produces daughter cells that are identical to parent cell.

DNA replication occurs in preparation for A) mitosis, only B) meiosis, only C) both mitosis and meiosis D) neither mitosis nor meiosis

both mitosis and meiosis

The separation of homologous pairs of chromosomes during meiosis is known as A) replication B) synthesis C) alignment D) disjunction

disjunction

These cells are a direct result of sperm and eggs A) mitotic cell division B) sex linkage C) fertilization D) gametogenesis

gametogenesis

10)Which process is most directly involved in the production of egg cells by a female frog?A) meiosisB) metamorphosisC) regenerationD) cleavage

meiosis

9)The fact that offspring may have characteristics somewhat different from those of their parents is primarily due toA) metamorphosisB) maternityC) mitosisD) meiosis

meiosis

A normal body cell of a fruit fly contains eight chromosomes. Each normal gamete of this organism contains only four chromosomes, as a result of the process ofA) binary fissionB) vegetative propagationC) germinationD) meiosis

meiosis

Which cell process occurs only in organisms that reproduce sexually?A) mutationB) replicationC) meiosisD) mitosis

meiosis

Which processes lead to the greatest variety of genetic combinations?A) asexual reproduction and cloningB) meiosis and fertilizationC) meiosis and mitosisD) cloning and mitosis

meiosis and fertilization

Which sequence represents the correct order of processes that result in the formation and development of an embryo? A) meiosis →fertilization →mitosisB) mitosis →fertilization →meiosisC) fertilization →meiosis →mitosisD) fertilization →mitosis →meiosis

meiosis →fertilization →mitosis

The process of meiotic division in human females is represented below. This process normally produces A) one functional gamete with one-quarter of the genetic information found in the diploid germ cell B) one functional gamete with one-half of the genetic information found in the diploid germ cell C) four functional gametes, each with one-quarter of the genetic information found in the diploid germ cell D) four functional gametes, each with one-half of the genetic information found in the diploid germ cell

one functional gamete with one-half of the genetic information found in the diploid germ cell

The process of meiotic division in human males is represented below This process produces four sperm cells, each with A) all of the genetic information contained in the diploid germ cell B) one-quarter of the genetic information contained in the diploid germ cell C) twice the genetic information found in the diploid germ cell D) one-half of the genetic information found in the diploid germ cell

one-half of the genetic information found in the diploid germ cell

Which two structures of a frog would most likely have the same chromosome number?A) skin cell and fertilized egg cellB) zygote and sperm cellC) kidney cell and egg cellD) liver cell and sperm cell

skin cell and fertilized egg cell

Which process normally occurs during meiosis, but not during mitosis? A) chromosomal replicationB) synapsis of chromosomesC) spindle formationD) centromere replication

synapsis of chromosomes