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Flashcards in Inheritance Deck (40)
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Define heredity

The passing of traits from parents to offspring

1

What are the two types of reproduction

Asexual and sexual reproduction

2

Asexual reproduction

"Clone" A single individual is the sole parent and passes copies of all it's jeans to its offspring

3

What is sexual reproduction

Two parents giving rise to offspring that are unique combination of jeans

4

Where is all this information for all the seriation stored

Genes

5

What is a gene

A segment of DNA

6

What determines genetic traits

One or more genes

7

Genes code for the production of particular

Proteins

8

Proteins express

The characteristic of the genes

9

Nucleic acid store genetic information in chromosomes which are passed from _____ to ______ during reproduction

Parents
Offspring

10

Genes are segments of

DNA located on are chromosomes

11

What type of organism is DNA one circular chromosome

Prokaryotic

12

In what organism is DNA packaged into the chromosomes in the nucleus

Eukaryotic

13

Duplicated chromosomes are called

Sister chromatids

14

Sister chromatids are held together by the

Centromere

15

In interphase the DNA is uncoil and is called

Chromatin

16

How many chromosomes to humans have

46

17

What are the first 22 pairs of the human chromosomes called

Autosomes

18

What are the last pair of the human chromosomes called

The sex chromosomes

19

What do the sex chromosomes determine

The organisms gender

20

What are homologous chromosomes

A pair of chromosomes (maternal and paternal) similar in size and shape

21

What do homologies chromosomes carry

They carry genes controlling the same inherited traits

22

What are alleles

Different forms of the genes that control the same inherited traits

23

What is fertilization

To pass genes from mother to father gametes must fused together in the process called fertilization

24

Define zygote

The fertilized cell becomes a new, unique organism called a zygote

25

Each gamete (egg or sperm) has only a

Single chromosome from each homologous pair (haploid chromosome number)

26

Zygote has

One of each pair of homologous chromosomes (one from mom one from dad) or the diploid chromosome number

27

What is the type of reproduction division that produces genetically different gametes

Meiosis

28

What happensin interface of meiosis 1

G1: cell growth
S: DNA replication
G2: organelles replicate

29

Happens in prophase of meiosis 1

Homologous chromosomes pair and forms a tetrad
Chromatin condenses to form chromosomes
Spindle fibers form and nuclear membrane dissolves
Crossing over occurs