Question

The Punnett square shown presents a cross between two piranha. Both parents have large teeth.

According to the chart, which combination describes the offspring expected from the cross?
A)
50% large-toothed and 50% small-toothed
B)
75% small-toothed and 25% large-toothed
C)
75% large-toothed and 25% small-toothed
D)
100% large-toothed

Answer 1

http://assets.openstudy.com/updates/attachments/54ff0e11e4b04c7db6db1212-callmeteddy-1426001470238-350.gif

Answer 2

I believe the answer is D :)

Answer 3

Okay you sure?

Answer 4

yes

Answer 5

Can you help with a few more?

Answer 6

according to the chart yes im positive

Answer 7

sure

Answer 8

Assume sexual reproduction occurs. What is the number of chromosomes in the zygote if the parent's reproductive cells or gametes contain 12 chromosomes each?
A)
6
B)
12
C)
24
D)
48

Answer 9

I chose C.

Answer 10

your right

Answer 11

kk

Answer 12

In the controversial scientific process of cloning, organisms are created that are genetically identical to the parent. This process would be classified as
A)
meiosis.
B)
fertilization .
C)
sexual reproduction.
D)
asexual reproduction.

Answer 13

D.

Answer 14

The diagram displays the copying of a DNA sequence from a gene before and after the copy is made. The * represents an error that was made. Identify what this error is called.
A)
replication
B)
recombination
C)
point mutation
D)
transfer mutation

Answer 15

B.

Answer 16

What is adenine?
A)
a base found in RNA
B)
an acid found in RNA
C)
a sugar found in RNA
D)
a phosphorus containing compound found in RNA

Answer 17

A

Answer 18

One major difference between asexual and sexual reproduction is that
A)
sexual reproduction makes clones.
B)
asexual reproduction creates clones.
C)
sexual reproduction has one cell division.
D)
asexual reproduction has two cell divisions.

Answer 19

its B)

Answer 20

This picture shows normal blood cells, which are round, and sickle cells, which appear much longer. People with sickle cells suffer from sickle cell anemia, which is an inherited disease. It is caused by a change in a gene responsible for production of hemoglobin. This type of change is known as a(n)
A)
cancer.
B)
genotype.
C)
mutation.
D)
acquired characteristic.

Answer 21

Sickle-cell disease, also known as sickle-cell anaemia and drepanocytosis, is a hereditary blood disorder, characterized by an abnormality in the oxygen-carrying haemoglobin molecule in red blood cells. This leads to a propensity for the cells to assume an abnormal, rigid, sickle-like shape under certain circumstances. Sickle-cell disease is associated with a number of acute and chronic health problems, such as severe infections, attacks of severe pain, and stroke, and there is an increased risk of death. so id say D)

Answer 22

A plant with the dominant trait, wrinkled seeds, is crossed with a plant that has non-wrinkled seeds. All of the offspring are all wrinkled-seeded. What is the likelihood that the gametes of the wrinkled seeded plant contain one non-wrinkled allele?
A)
0%
B)
25%
C)
50%
D)
100%

Answer 23

D)

Answer 24

hey Alyssa could you help him cause I gtg

Answer 25

I would say either 25 or 50, even tho they got the dominant trait of wrinkled seeds , they could still have the gene of non wrinkled seeds.

Answer 26

is that a yes?

Answer 27

im going more towards 50%

Answer 28

hmmmm okay

Answer 29

An apple plant has two dominant alleles for red apples, RR. If it is crossed with another plant that has recessive genes for green apples, rr, which percentage of the offspring will have red apples, assuming random chromosome segregation?
A)
25%
B)
50%
C)
75%
D)
100%

Answer 30

@alyssa.ward2016

Answer 31

B

Answer 32

it would then be Rr

Answer 33

which is now half and half

Answer 34

Which base is found in RNA but NOT in DNA?
A)
adenine
B)
cytosine
C)
thymine
D)
uracil

Answer 35

@shrutipande9 help me out

Answer 36

@alyssa.ward2016 I answered your quistion if you still needed help

Answer 37

D is your answer

Answer 38

Which of these processes is LEAST associated with producing genetic abnormalities?
A)
deletion
B)
nondisjunction
C)
replication
D)
transformation

Answer 39

@coolman500 @alyssa.ward2016

Answer 40

what

Answer 41

http://www.nature.com/scitable/topicpage/DNA-Deletion-and-Duplication-and-the-Associated-331 this will help you

Answer 42

http://en.wikipedia.org/wiki/Mitosis

Answer 43

Among a species of butterflies, the color blue (B) is a dominant trait. Yellow color (b) is a recessive trait. If a pure blue butterfly (BB) mates with a pure yellow (bb), what will the offspring look like?
A)
They will all be blue.
B)
They will all be yellow.
C)
Half will be blue and half will be yellow.
D)
About 75% will be blue and 25% will be yellow.

Answer 44

open is a new qeustion

Answer 45

@CallMeTeddy do u know how to do a punnett square?