B6 Inheritance, Variation and Evolution

Question 1

How many chromosomes are found in the nucleus of a normal human body cell?

Accepted Answer

46

Question 2

Two seemingly normal parents have a child with CF what must their genotypes be?

Accepted Answer

C c

Question 3

Which type of cell division produces genetically identical cells?

Accepted Answer

Mitosis

Question 4

A cell or organism that is genetically identical to its parent is called a?

Accepted Answer

Clone

Question 5

Approximately what percentage of our genes are the same as those of Chimpanzee's?

Accepted Answer

96%

Question 6

Which is true of human sperm cells?

Accepted Answer

Half will be X, Half will be Y

Question 7

Human gametes are called?

Accepted Answer

Eggs & Sperm

Question 8

How many chromosomes are there in the nucleus of a human zygote?

Accepted Answer

46

Question 9

Random changes to DNA can cause variation these changes are called?

Accepted Answer

Mutation

Question 10

A child born with polydactyly will have?

Accepted Answer

Extra fingers or toes

Question 11

Which common ancestor did modern humans most likely evolve from?

Accepted Answer

Chimpanzee

Question 12

Which of these is produced using genetically engineered bacteria?

Accepted Answer

Human insulin

Question 13

When does a recessive allele control the development of a characteristic?

Accepted Answer

When the dominant allele is not present

Question 14

What is the function of Gametes?

Accepted Answer

Sexual reproduction

Question 15

Useful characteristics that help organisms to survive are often caused by?

Accepted Answer

Mutations to DNA

Question 16

How many chromosomes are found in the nucleus of a human egg cell?

Accepted Answer

23

Question 17

In humans where are female gametes made?

Accepted Answer

Ovaries

Question 18

Mitosis is used to produce new cells in which type of reproduction?

Accepted Answer

Asexual

Question 19

How many chromosomes are found in the nucleus of a human sperm cell?

Accepted Answer

23

Question 20

Cystic fibrosis is caused by a recessive allele; what would their genotype be?

Accepted Answer

c c

Question 21

What are human sex cells called?

Accepted Answer

Gametes

Question 22

Egg X is fertilised by Sperm Y what sex will the offspring be?

Accepted Answer

Male

Question 23

Which is true about mutations?

Accepted Answer

All three are correct

Question 24

A gene is a small section of?

Accepted Answer

DNA

Question 25

Some of the most important evidence for Darwin's theory of evolution came from?

Accepted Answer

Fossils and Finches

Question 26

Where in a human cell is the genetic information held?

Accepted Answer

Nucleus

Question 27

Which of these characteristics can be inherited?

Accepted Answer

All three are inherited

Question 28

Human gametes are produced by which type of cell division?

Accepted Answer

Meiosis

Question 29

Animals are often selectively bred to produce which products?

Accepted Answer

More milk, More meat

Question 30

Which type of cell division makes 4 daughter cells with half the normal number of chromosomes?

Accepted Answer

Meiosis

Question 31

Which is the correct order of size starting with the smallest?

Accepted Answer

Gene, Chromosome, Nucleus

Question 32

Choosing the best animals and plants to produce offspring is called?

Accepted Answer

Selective breeding

Question 33

A different version of a gene is called?

Accepted Answer

Allele

Question 34

Which is true of human egg cells?

Accepted Answer

All will be X

Question 35

What is the genotype of a human male?

Accepted Answer

XY

Question 36

What is the genotype of a human female?

Accepted Answer

XX

Question 37

What is a zygote?

Accepted Answer

A fertilised egg cell

Question 38

Which type of cell division is used to grow or replace damaged cells?

Accepted Answer

Mitosis

Question 39

Which type of reproduction causes genetic variation?

Accepted Answer

Sexual

Question 40

Egg X is fertilised by Sperm X what sex will the offspring be?

Accepted Answer

Female

Question 41

When two gametes from different parents meet what process takes place?

Accepted Answer

Fertilisation

Question 42

In humans where are the male gametes made?

Accepted Answer

Testes

Question 43

Brown haired man Bb & Red haired woman bb have kids what is the probability of red haired child

Accepted Answer

1 in 2

Question 44

Natural selection is also known as?

Accepted Answer

Survival of the fittest

Question 45

How many homologous pairs of chromosomes are found in normal human body cells?

Accepted Answer

23

Question 46

In a DNA molecule how many bases code for each amino acid?

Accepted Answer

3

Question 47

Two cloned spider plants may not grow to the same height because of differences in?

Accepted Answer

Their Environment

Question 48

Animals or plants that are not able to compete successfully will eventually become?

Accepted Answer

Extinct

Question 49

The theory of evolution by natural selection was the idea of?

Accepted Answer

Charles Darwin

Question 50

What is the genetic material made of?

Accepted Answer

DNA

B6 Inheritance, Variation and Evolution

Questions 50

B6 Inheritance, Variation and Evolution

Questions 50