Genetics Flashcards

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1
Q

The study of the way animals and plants pass on to their offspring

A

Genetics

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2
Q

Characteristics that a child receives from both parents

A

Heredity

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3
Q

What are cells?

A

Basic unit of all living matters

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4
Q

What is a cytoplasm?

A

Substance of a cell outside a nucleus.

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5
Q

This central point of cell contains genetic coding for maintaining life systems and issuing commands for growth and reproduction

A

Nucleus

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6
Q

There are how many pairs of chromosomes?

A

23

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7
Q

Difference between mitosis and meiosis

A

Mitosis- cell divides by copying the DNA-cell splits- new cell with normal number of chromosomes

Meiosis- contains 1/2 sets of chromosomes

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8
Q

The trait seen in person (more powerful)

A

Dominate gene

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9
Q

Weaker and hides in the background (determine when two of them are present, may show up in future generations)

A

Recessive gene

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10
Q

Carrier

A

Has a recessive gene that is not visible

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11
Q

4 factors that contribute to multiple births

A
  1. History of family
  2. Increased hormones naturally
  3. Fertility drugs
  4. Age (32-36)
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12
Q

What are alleles?

A

The different possibilities for a given trait

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13
Q

What are genes?

A

The sequence of DNA that codes for a protein and thus determines a trait

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14
Q

Who is the father or genetics?

A

Gregor Mendel

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15
Q

What is the law of segregation?

A

It is when two alleles for each trait separate when gametes form

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16
Q

What is law of independent assortment?

A

Is when genes for different traits are inherited independently for each other

17
Q

Genotype vs Phenotype

A

Genotype- the genetic makeup of an organism (the gene or allele combination)

Phenotype- the physical characteristics of an organism

18
Q

Homozygous vs Heterozygous

A

Homozygous- two identical alleles

Heterozygous- two different alleles

19
Q

A diagram showing the gene combinations that might result from a genetic cause

A

Punnett square

20
Q

A situation in which one allele is not completely dominant over another

A

Incomplete dominance

21
Q

Codominance

A

When both alleles of a gene contribute to the phenotype of the organism

22
Q

Three or more alleles of the same gene

A

Multiple alleles