Question

Which combination of sex chromosomes results in a male human being?

1 XX
2 YY
3 XY
4 either XX or YY
is it a?

Answer 1

There is no a, but XX gives you a female.

Answer 2

I did figure it out, but thank you for replying!

Answer 3

Xx is female.....

Answer 4

Okay you all know that the question is which one means male so why are you all answering female? I dont get it!

Answer 5

It's XY. Stop answering what a female is, and answer the question, not something else! Lol

Answer 6

Answers to the whole practice test:

C
D
D
B
A
A
B
B
D
B
C
C
A
D
C
B
C

I got 100% :)

Answer 7

^^^ Yes answers to Practice Test are correct above

1. Which combination of sex chromosomes results in a male human being?
XX-(this female)
YY
XY**(this is male)
either XX or YY

2. How does a geneticist use pedigrees?
A.) to create genetic crosses
B.) to replicate identical strings of DNA
C.) to prove that sex-linked traits are caused by codominant alleles
D.) to trace the inheritance of traits in humans**

3. Cloning results in two organisms that are
both adult mammals.
produced from cuttings.
genetically similar.
genetically identical.**

4. Which of these is an example of the benefits of genetic engineering?

A.) crossbreeding to create disease-resistant crops
B.) creating human insulin to treat people with diabetes** changing genetics- pharmaceutical companies have created many benefits using genetic engineering.

C.) analyzing karyotypes and pedigree charts
D.) growing a new plant from a cutting

5. Most sex-linked genes are found on

A.) the X chromosome. ** just think about sex linked being linked more to men and they only have 1 X chromosome, and that means that they don't have an other X chromosome to cover up the the missing or altered gene. Y chromosomes don't have as many genes on them, they are smaller.
B.) the Y chromosome.
C.) chromosome 21.
D.) all 23 pairs of chromosomes.

6. A carrier is a person who has

A.) one recessive and one dominant allele for a trait.**
B.) two recessive alleles for a trait.
C.) two dominant alleles for a trait.
D.) more than two alleles for a trait.

7. Breeders that cross genetically different individuals in hope of producing organisms with multiple desirable traits are using a technique called

A.) cloning.
B.) hybridization.** think breeders cross specific dogs that they think people will like to create a hybrid-dog a dog mixed with 2 different types to get certain traits that humans desire, or will buy from them. Labradadoodle- big dog, that is smart, but doesn't shed = family friendly
C.) genetic engineering.
D.) inbreeding.

8. What "produces egg and sperm" cells "during the life cycle" of a plant?

A.) gamete
B.) gametophyte **
C.) sporophyte
D.) zygote

9. In plants, sexual reproduction occurs when "sperm and egg **unite**" to form a

A.) gamete.
B.) gametophyte.
C.) sporophyte.
D.) zygote.**

10. A plant continues to grow throughout its life through the use of a process called

A.) alternation of generations.
B.) photosynthesis.** plants need photosynthesis to make it's own food!
C.) dormancy.
D.) germination.

11. Mammals whose young develop in a pouch on the mother’s body are called (think kangaroos in a pouch =marsupials)

A.) placental mammals.
B.) monotremes.
C.) marsupials.**
D.) gymnosperms.

12. Which is one advantage of sexual reproduction? (think sexual reproduction = humans, and humans have less off spring than a fish, and all humans are different in many ways...= genetic differences =variations)

A.) More offspring are produced.
B.) More offspring survive to maturity.
C.) The offspring have more genetic variation. **
D.) The offspring and the parents are identical.

13. Where does a placental mammal develop before its body systems can function independently? (placenta= human babies are developed in the placenta in a mothers belly, and a human is a mammal, and so a placental mammal would develop inside the mother's body before a mother has the baby, because before a baby is born the baby uses nutrients from the mother gained through the umbilical cord...)

A.) inside its mother’s body**
B.) in a pouch on its mother’s body
C.) in a nest near its mother
D.) inside an egg that is protected by the mother

14. What is the function of courtship behavior for an animal? (think about the birds that dance to attract a mate, and even a lot of humans like to watch people dance, it is done at weddings)

A.) to mark its territory
B.) to get a good supply of food
C.) to protect itself from predators
D.) to attract a mate of the same species**

15. Budding is a form of
(well think budding starts with plants)

A.) gestation.
B.) fertilization.
C.) asexual reproduction.**
D.) sexual reproduction.

16. Which is one advantage of external fertilization? (external happens outside of the body externally...therefore think fish...and you know fish have a lot of eggs that can be fertilized at one time)

A.) The offspring are genetically identical to the parents.
B.) More eggs can be fertilized at one time.**
C.) More sperm can be released at one time.
D.) More protection is available for developing zygotes.

17. Plants that have reproductive structures called cones are (angiosperms-think plants/flowers/seeds....the opposite of angio-sperms...gymno-sperms= plants that produce cones)

A.) angiosperms.
B.) gametophytes.
C.) gymnosperms.**
D.) sphorophytes.

Answer 8

dude you srsly just wrote all the out? talk about a hand cramp. XD

Answer 9

Thank you so much what!!!!

Answer 10

i got 100%

Answer 11

I failed

Answer 12

gotta 87% i missed clicked but yea they work thxs

Answer 13

Thanks: what

He/She is completely right! I got a 100% for the practice test on the reproductive system!!

Answer 14

Thanks WHAT

Answer 15

yo lol thnks lot

Answer 16

coming over from youtube..... this is a freaking mess

Answer 17

for anyone in 2020 this test is different and shorter but it has the same answers and questions, so look for the question and the answers are correct '' Mr.Eliot '' is where your gonna search for the answers.

Answer 18

Thank you Umm...

Answer 19

I got 57% using theirs.

For the Connections Academy Unit 3 Lesson 4 Practice Test
1. C.
2.D.
3. D.
4. B
5. A.
6. A.
7. B.
8. B.
9. C.
10. C.
11. A.
12. D.
13. C.
14. B.

Looked at the test and put in the correct answers.

Answer 20

Thanks @Connexus, He/She is correct i got a 100%

Tysm, BarneyCoochie❤❤

Answer 21

THNX CONNEXUS!!!!

100% correct no joke ty

Answer 22

Connexus i got 100% thx bro

Answer 23

The real answers are

1.C
2.D
3.D
4.B
5.A
6.A
7.B
8.B
9.D
10.B
11.C
12.C
13.A
14.D
15.C
16.B
17.C
People hear my warning these are the correct answers i got 70% using what's answers and if your in 6th grade these are correct.
Lesson 9: Reproduction and Development of Organisms Review
Science 6 B Unit 1: Reproduction and Development of Organisms
Connections Academy

Answer 24

: )( : IS RIGHT I GOT A JUICY 100% I GIVE THE RIGHT ANSWERS PERIDOT WITH EXTRA TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT

Answer 25

Thank you sooo much!!

Now i can do my things properly!!
thx!!

Answer 26

1.C

2.D
3.D
4.B
5.A
6.A
7.B
8.B
9.D
10.B
11.C
12.C
13.A
14.D
15.C
16.B
17.C

@what is correct, I am just labeling their answers with the numbers!

Answer 27

Ight then, thanks I needed to check my work.

Answer 28

@Kitten, ikr that takes balls. This dude is a legend.

Answer 29

#:)(: You didn't put them in order then because those answers are #Whats answers

Answer 30

got 100% on the test on my own and checked my answers here thanks!!

also dont worry if u get anything wrong on the test its just a practice and wont go toward ur grade.

Answer 31

1.c 2.D 3.D 4.B 5.A 6. A 7. B 8.B 9. D 10. B 11.C 12.C 13.A 14.D 15.C 16.B 17.C

Answer 32

solike

Answer 33

i got 25 questions on mines

Answer 34

so i f'd up and missed two, but thats okay, cause this stuff do be pretty easy :)) but yeah, stay safe and wash chu hands ^w^

Answer 35

:)(: is right for Unit 3 Lesson 9 8th grade science practice test

Answer 36

@WHAT IS CORRECT FOR 7TH GRADE SCIENCE REPRODUCTION AND DEVELOPMENT OF ORGANIZIMS PRACTICE!!! TYSM @WHAT USE THIER ANSWERS FOR 7TH GRADE! I DON LIE TRUST ME 100% GO BACK UP AND USE THEIR ANSWERS IF YOU DONT YOU ARE LOST.

(⌐■_■) = ME
p.s I used my x-box username for my jiskha name :)
message me on x-box if you see this

Answer 37

Yall dudes and dudettes got 17 questions I only got 14

Answer 38

number one is xy

because if you where xx chromosomes you wouldn't have nipples

Answer 39

SIR WOMAN HAVE NIPPLES JSHIHDINCZIEFM

Answer 40

BUT @Connexus is right. You would believe in the toenail. You are a A SKINNY LEGEND if you do.

If you don't...
S M H

Answer 41

1. C.

2.D.
3. D.
4. B
5. A.
6. A.
7. B.
8. B.
9. C.
10. C.
11. A.
12. D.
13. C.
14. B.

Answer 42

mr.elliot is right for connexxus lesson 6 unit 1 practice test :)

Answer 43

thanks whattt I got 100..

Answer 44

aight for me i got 100% on mr.eliot

Answer 45

who is right

Answer 46

1.C

2.D
3.D
4.B
5.A
6.A
7.B
8.B
9.D
10.B
11.C
12.C
13.A
14.D
15.C
16.B
17.C

These are correct for 8th grade pratice test.

Answer 47

@what is 100% corr3ct

Answer 48

and they work for 6th grade

Answer 49

also for 7th grade

Answer 50

Guys what is 100000% right

Answer 51

:)(: is right for the 17 question

Answer 52

whats sex chrominoe????? mom has a lot of explaning to dp