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Biology 100 > Chapter 19 Pt. 3 > Flashcards

Chapter 19 Pt. 3 Flashcards

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1
Q

What are karyotypes?

A

chromosomes numbered form largest to smallest

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2
Q

__________ can be checked for irregularities in number or structure of chromosomes

A

Karyotypes

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3
Q

Karyotypes can be checked for irregularities in _______ or ________ of chromosomes

A

number

structure

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4
Q

How do gametes, eggs or sperm, differ from somatic cells?

A

they are haploid

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5
Q

A _______ is indicated by n

A

haploid

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6
Q

_______- they have only one number of each homologous pair of chromosomes

A

haploid

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7
Q

What is meiosis?

A

two divisions that result in up to four haploid daughter cells

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8
Q

Gametes are produced by a type of cell division called ________

A

meiosis

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9
Q

What are the functions of meiosis?

A

(1) keeps the number of chromosomes in a body cell constant from generation to generation
(2) increases genetic variability in the population

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10
Q

The steps of Meiosis I:

(1)
(2) the separation of homologous chromosomes occurs reliably
(3) members of homologous pairs line up next to one another by a phenomenon called synapsis
(4) interkinesis
(5) homologous chromosomes separate into two haploid cells, each containing one member of each homologous pair

A

produces two cells, each with 23 chromosomes

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11
Q

The steps of Meiosis I:

(1) produces two cells, each with 23 chromosomes
(2)
(3) members of homologous pairs line up next to one another by a phenomenon called synapsis
(4) interkinesis
(5) homologous chromosomes separate into two haploid cells, each containing one member of each homologous pair

A

the separation of homologous chromosomes occurs reliably

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12
Q

The steps of Meiosis I:

(1) produces two cells, each with 23 chromosomes
(2) the separation of homologous chromosomes occurs reliably
(3)
(4) interkinesis
(5) homologous chromosomes separate into two haploid cells, each containing one member of each homologous pair

A

members of homologous pairs line up next to one another by a phenomenon called synapsis

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13
Q

The steps of Meiosis I:

(1) produces two cells, each with 23 chromosomes
(2) the separation of homologous chromosomes occurs reliably
(3) members of homologous pairs line up next to one another by a phenomenon called synapsis
(4)
(5) homologous chromosomes separate into two haploid cells, each containing one member of each homologous pair

A

interkinesis

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14
Q

The steps of Meiosis I:
(1) produces two cells, each with 23 chromosomes
(2) the separation of homologous chromosomes occurs reliably
(3) members of homologous pairs line up next to one another by a phenomenon called synapsis
(4) interkinesis
(5)

A

homologous chromosomes separate into two haploid cells, each containing one member of each homologous pair

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15
Q

what is synapsis?

A

“bringing together”

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16
Q

What is interkinesis?

A

a brief interphase like period

17
Q

What occurs during Meiosis II?

A

sister chromatids separate, and four haploid daughter cells are formed that may develop into gametes

18
Q

What happens for males during Meiosis II?

A

in males, one diploid cell can result in four functional sperm

19
Q

What happens for females during Meiosis II?

A

in females, meiotic divisions of one diploid cell result in only one functional egg and up to three nonfunctional cells called polar bodies

20
Q

Is this mitosis or meiosis:

involves one cell division

A

mitosis

21
Q

Is this mitosis or meiosis:

process two diploid cells

A

mitosis

22
Q

Is this mitosis or meiosis:

occurs in somatic cells

A

mitosis

23
Q

Is this mitosis or meiosis:

results in growth and repair

A

mitosis

24
Q

Is this mitosis or meiosis:

no exchange of genetic material

A

mitosis

25
Q

Is this mitosis or meiosis:

daughter cells are genetically similar

A

mitosis

26
Q

Is this mitosis or meiosis:

involves two cell divisions

A

meiosis

27
Q

Is this mitosis or meiosis:

produces up to four haploid cells

A

meiosis

28
Q

Is this mitosis or meiosis:

occurs only in ovaries and testes during the formation of gametes (egg and sperm)

A

meiosis

29
Q

Is this mitosis or meiosis:

results in gamete (egg and sperm) production

A

meiosis

30
Q

Is this mitosis or meiosis:

parts of chromosomes are exchanged in crossing over

A

meiosis

31
Q

Is this mitosis or meiosis:

daughter cells are genetically dissimilar

A

meiosis

Biology 100 (58 decks)

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